How the Internet Works - A technical introduction to the Internet

From 25 £ /h

A crash course on the fundamentals of computer networking and the Internet:
Short history
TCP/IP
The 4-layer model:
- The Link Layer: Ethernet, WiFi, etc.
- The Internet Layer: IP
- The Transport Layer: UDP and TCP
- The Application Layer
HTTP - URLs, methods, requests, responses...

Location

Online from Israel

Age

Children (7-12 years old)

Teenagers (13-17 years old)

Adults (18-64 years old)

Seniors (65+ years old)

Student level

Beginner

Duration

60 minutes

The class is taught in

English

Hebrew

Skills

Network infrastructure

Internet

Availability of a typical week

(GMT -04:00)

New York

Online via webcam

Mon

Tue

Wed

Thu

Fri

Sat

Sun

00-04

04-08

08-12

12-16

16-20

20-24

Check out my new class on the C programming language!

37 £ /h

C is the most important programming language of the last 50 years. This course is aimed both at absolute beginners and at amateur programmers who wish to become proficient in C. I follow Kernighan and Ritchie's book but I elaborate on the fundamental concepts that underlie the development and runtime environments, e.g. how the compiler works, what the stack is, etc.

Michael

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(4)

WordPress is a platform that allows you to create any type of site: commercial site, blog, online store, portfolio, there are no limits!
I offer a la carte training, to bring you to a level of autonomy that will allow you to create and manage your website easily.
Advanced or beginner level.
Advice from a graphic designer on layout, typography, and choice of colours due to the site.

Assistance in the creation of printed graphic projects.

In-company training is also possible.

As a qualified graphic designer and trainer, I can intervene on an ad hoc and personalized basis for all your training needs or graphic creations.

5.0

(4)

Engineer in engineering sciences option electrical engineering
Senior professor of engineering sciences

SKILLS
IS engineering sciences
Embedded system (microcontrollers, z80 microprocessors, Motorola, ARM), Real-time system, network concept (OSI, TCP/IP), design of systems and electronic cards (analog, digital, power supply), signal processing, communication protocols ( SPI, I2C, CAN BUS, UART...), telecommunications.

Technical skills :
Languages: C / C ++, JAVA, VHDL / VERILOG, Python, Assembler.
Professional software:
MATLAB, SIS + PSIM + PSpice, QUARTUS, IDE68, Mikro C, Xilinix ISE, Labview, CoIDE.
Technologies:
Siemens PLC, Allen bradeley, STM32, FPGA, TIA Portal, STEP7, RSLogix

 Electrical engineering: Electric motors, Transformers
 Renewable energies: study of the solar pumping installation and the wind turbine installation.
 Electronics: analog, digital, power electronics, system electronics and instrumentation
biomedical.
 Networks and telecommunications.
 Industrial IT and programmable logic controllers.
 Automatic: modeling, identification and control of systems.
 Mechatronics.
 MATLAB
• Noise and vibration of asynchronous motors
• Speed variator
• Study and implementation of LV / MV standards
• Electrical accreditation: NF C18-510 standard
• NF C 15-100 electrical installations
• Management of electrical energy in networks (Continuous Power Flow)

Luana

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(4)

Having trouble understanding how social media works? Do you need to highlight your business, your creations, your travels on social networks?
I am a social media expert and I can support you in your launch.
If you've already started, congratulations! I'm here to help you find direction, strategize and take your social media to the next level.
Social networks are now an integral part of our daily lives and all companies, brands and others must be up to date to perform. I would be happy to help you in this process and teach you how to succeed in this digital world where everything is possible.

Humberto

5.0

(4)

Office automation from scratch.
Mastery of the most up-to-date WINDOWS 11 operating system environment.
WORD, POWERPOINT, EXCEL.

Computer science from scratch.
Complete computer handling.
Proficiency in the WINDOWS 11 environment.
Software Installation.
It reaches the Operating Systems installation.

Farouk

5.0

(4)

Are you using ChatGPT, Gemini, or other AIs, but feel like you're only scratching the surface of their potential? Are your results often generic, inaccurate, or disappointing? It's time to move from a simple user to a true AI pilot. 🤖✨

This 4-hour intensive course, "Prompt Engineering: Mastering the Art of Communicating with AI," is designed to give you the keys to effective and powerful communication with language models (LLM).

> 🧠 “If I had an hour to solve a problem, I would spend 55 minutes defining the question.”

This is the essence of Prompt Engineering: the art of asking the right question to get the best answer. 🎯

🧰 Exclusive methods taught

During this practical and immersive training, you will discover two structured methods to transform your ideas into tangible results:

🔹 The ACTIF method
👉 A foolproof approach to building powerful text prompts. You'll learn how to define:

Action
Context
Tone
Identify
Format

...in order to obtain clear, targeted and impactful content, analyses or strategies. 📄💡

🔹 The IMAGES method
👉 Your visual passport to create high-value graphic prompts. Based on 6 pillars:

Intention
Pattern
Atmosphere
Grain
Aesthetic
Style

...it will allow you to generate images that faithfully reflect your creative vision. 🖼️🎨

👥 Who is this course for?

✅ Entrepreneurs and marketers who want to create targeted content and relevant strategies.
✅ Content creators, writers, designers who want to boost their creativity and productivity.
✅ Professionals from all sectors wishing to integrate AI into their daily lives (automation, analysis, resolution).
✅ Students and curious people wanting to master a strategic skill for the future of work. 🧑‍💼📈

🧠 What you will master in 4 hours:

✔️ Understand the functioning and capabilities of LLMs (ChatGPT, Gemini, Claude, etc.) 🤓
✔️ Structure impactful text requests with the ACTIF method 📝
✔️ Create powerful visual prompts with the IMAGES method 🖌️
✔️ Move from simple interaction to intelligent co-creation with AI 🧩
✔️ Put it into practice with concrete exercises, dedicated tools, and realistic use cases 🛠️📊

🎓 Join us!

Stop being subjected to AI... and start leading it.
🎯 Master the art of dialogue with artificial intelligence,
💼 and unleash their full potential to serve your projects!

Cedric

5.0

(4)

COMPUTER NETWORKS COURSE:

The Computer Networks course aims to introduce you to the principles, technologies, and tools that enable communication between computers and connected devices. You will learn how data flows across a network, how local area networks (LANs) and wide area networks (WANs) are structured, and the roles of the main equipment (switches, routers, access points, etc.).
By the end of this course, you will be able to:
- Understand how TCP/IP networks and IP addresses work.
- Configure a simple network and troubleshoot connectivity issues.
- Identify the main communication protocols (HTTP, DNS, DHCP, etc.).
- Implement basic network security concepts.

This course combines theory and practice, allowing you to develop concrete skills in network administration and troubleshooting.

WINDOWS SERVER COURSE

The Windows Server course aims to train you in the installation, configuration, and management of a Microsoft server operating system. You will learn how to create and administer a domain, manage users, groups, resource shares, and network security.

By the end of this course, you will be able to:

- Install and configure Windows Server.
- Manage user and group accounts with Active Directory.
- Setting up DNS and DHCP servers
- Implement security strategies (GPO).
- Administration of a multi-domain environment
- Administer file and printer sharing.
- Monitor and troubleshoot network services.

This course combines practical exercises and theoretical concepts to prepare you to effectively administer a professional Windows environment.

LINUX COURSE:

The Linux course aims to introduce you to the use and administration of free operating systems. You will learn to master basic commands, user, file, service and permission management, as well as the installation and configuration of a Linux system.

By the end of this course, you will be able to:
- Use the terminal and Linux commands effectively.
- Manage users, groups, rights and permissions.
- Install and configure network services (SSH, Apache, etc.).
- Automate tasks with shell scripts.
- Administer and troubleshoot a Linux system.

This course combines intensive practice and solid foundations to make you a competent Linux administrator.

Javi

5.0

(4)

I solve any problem related to IT systems, networks, and cybersecurity. I offer online classes. I resolve any issue remotely. Classes are available for vocational students, engineering students, general IT support, and anyone who wants to learn for any reason!

Christopher

5.0

(4)

Have you just bought a new computer or do you finally want to feel comfortable with the one you have? This course is for you!
Designed specifically for beginners and seniors, this course guides you step by step in discovering your Mac or PC. No technical jargon, no judgment – just clear explanations and plenty of patience.
In the program :

Navigate your computer with confidence (desktop, files, folders)
Using the Internet and emails safely
Manage your photos and documents
Discover office tools (Pages/Numbers or Word/Excel)
Communicate with your loved ones via FaceTime or WhatsApp
Back up your data so you don't lose anything
Introduction to AI Assistants: Artificial intelligence (ChatGPT, etc.) to simplify your life

My approach: I adapt to your pace and needs. Every question is welcome, and we progress together until you feel independent.

See you soon, Chris

Sami

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(4)

A computer science engineer with a Master's degree (Bac+5), specializing in programming and algorithms, I have been a private tutor since 2023. I support middle school, high school, and post-secondary students with a clear, supportive, and structured teaching approach. My goal is to strengthen logic, methodology, and confidence so that each student can make lasting progress and achieve their academic goals.

Passionate about teaching and sharing computer science knowledge, I also volunteer to help young people develop their logic, autonomy and digital skills in a caring and motivating environment.

I support high school and post-baccalaureate students according to their field of study:

- NSI (general high school): Python, algorithms, web basics (HTML, CSS, JavaScript) and databases (SQL)

- STI2D – SIN option: Python, PHP, C (Arduino), technical projects and embedded systems

- Vocational Baccalaureate (Digital Systems): networks, systems and applied programming

- BTS in Computer Science: structured and object-oriented programming, professional projects and tools

My approach is based on listening, patience, and teaching methods adapted to each individual's profile, in order to foster success, motivation, and a desire to learn.

Elias

5.0

(4)

This course introduces students to the essential role of data annotation in artificial intelligence and machine learning. Learners will gain a clear understanding of how raw data is transformed into structured, labeled datasets that enable AI systems to learn, interpret, and make accurate predictions.

Through guided instruction and practical examples, the class explores different types of annotation, including text, image, audio, and video labeling. Students will learn industry-relevant techniques, annotation standards, and quality control practices that ensure consistency and reliability in real-world AI projects.

The course emphasizes hands-on learning, allowing participants to practice annotation tasks and understand how their work directly impacts the performance of AI models. By the end of the class, students will have the foundational knowledge and practical skills needed to begin working on data annotation tasks or pursue opportunities in the AI and data industry.

Aymane

5.0

(4)

Programming courses for beginners and intermediate learners.
Learning computer logic, the basics of coding and putting it into practice with exercises and mini-projects.
Personalized support according to the student's level.
Opportunity to move towards web or mobile development with a concrete and practical approach.

Nuria

5.0

(4)

Are you studying SMR, ASIR/ASIX, DAM, DAW, Computer Engineering or other technology training and need help with systems, networks or infrastructure?

I'm Nuria, a computer science teacher with over 10 years of teaching experience and professional experience in systems administration. Classes are online, one-on-one, and fully tailored to your syllabus, level, and goals.

We can work on content such as:

* Linux and systems administration;
* Windows and Windows Server;
* users, groups, permissions, processes and services;
* TCP/IP networks, addressing and subnetting;
* DNS, DHCP, routing, NAT and network services;
* server administration and deployment;
* virtualization and virtual machines;
* Docker, containers, and Docker Compose;
* scripting and automation with Bash or PowerShell;
* storage, backups and recovery;
* log monitoring and analysis;
* cloud computing and infrastructure concepts;
* firewalls and network security;
* Linux and server hardening;
* cybersecurity and best practices;
* Diagnosis and resolution of incidents.

The classes are primarily practical. I don't want you to memorize a list of commands or steps: we'll work towards you understanding what's happening, knowing where to look when something goes wrong, and being able to gradually arrive at a solution on your own.

We can start from scratch, prepare a subject or exam, solve a specific practice, configure an environment or set up laboratories where you can practice the content you are studying.

In addition to the classes, you will have access to our educational platform with its own documentation, notes, exercises, examples, practices and other resources to continue working between sessions.

Chalbi

5.0

(4)

This course is aimed at students, technology enthusiasts and professionals in career transition who wish to demystify the world of networks and telecommunications.
The main objective is to make this discipline concrete, accessible and directly applicable.

What you will learn:
- Decode the architecture of modern mobile networks (4G, 5G) and data networks.
- Analyze the essential communication protocols that make the Internet work on a daily basis.
- Master the basics of transmissions (fiber optics, wireless links, routing).

My teaching method:
If you're a complete beginner or these concepts seem too abstract, don't worry. We'll go through each key concept step by step. I use simple visual diagrams, everyday analogies, and practical examples to avoid unnecessary jargon. My goal is to build your confidence and transform theory into real-world skills, all within a supportive and stimulating learning environment.

Salim

5.0

(4)

This course is aimed at beginners and students who wish to understand web cybersecurity in a practical, progressive and structured way.

The goal is not to learn techniques by heart, but to understand how a web application works and how to reason when faced with a security problem.

We will be discussing, in particular:

• the basics of HTTP: requests, responses, methods, cookies and sessions;
• Authentication vs. Authorization;
• Getting started with Burp Suite Community;
• Broken Access Control;
• IDOR and BOLA;
• horizontal and vertical privilege escalation;
• roles, permissions and ownership;
• Security API basics;
• bug bounty methodology;
• drafting a clear vulnerability report.

The exercises are performed in dedicated learning labs, CTFs, or explicitly authorized environments.

My method is based on a simple line of reasoning:

Actor → Action → Object → Expected Authorization

Each session alternates between explanations, demonstrations, practical exercises with Burp Suite and guided correction.

The program can be adapted to the student's level, from the discovery of Web cybersecurity to the first methodologies of BAC/IDOR vulnerability research.

Adiel

5.0

(4)

Master CCNA certification with a bilingual tutor who focuses on understanding, not memorization. I help IT professionals pass the Cisco CCNA exam through clear explanations of networking concepts, hands-on troubleshooting practice, and effective exam strategies.

My approach combines conceptual learning with practical application. Whether you're starting from scratch or retaking the exam, I'll guide you through routing, switching, IP addressing, network security, and troubleshooting in a way that actually makes sense.

Sessions are available in English or Spanish - perfect for Spanish speakers struggling with technical English material. Having scored 92% on practice exams, I know exactly what works and where students typically struggle.

What you'll gain:

Deep understanding of networking fundamentals
Practical troubleshooting skills
Exam-taking strategies and time management
Confidence with technical English terminology
Real-world networking knowledge beyond just passing the test
Flexible online sessions via Zoom/Google Meet. Personalized to your learning pace and current knowledge level.