I can teach the use of the most in-demand Adobe and MS packages as used in businesses, such as the marketing departments of banking and in the legal profession. This is a great skill to have, it's made me continually employable and well-paid. Most graphic design courses will teach you the more creative side of it, I can teach you how it is used most often in a business environment, where you have to stick to a brand image and usually work to a tight deadline. I specialise in graphs and data visualisation; the latter is quite complex so I will just give an overview and some pointers.