I assume that he has got some formal IT technical training qualifications? CLAIT , etc. If people are entrusting their valuable computers / data systems to him I suspct they will want the reassurance of knowing they're dealing with somebody who is technically competent, especially if he's going to charge money for it. His local Council's Adult Education Authority will have a list of available courses. Most local libraries also hold details of Adult Education Courses. He could try going through Yellow Pages and contacting IT specialist / computer repair companies to see if they have any openings for freelance consultants; m otherwise maybe he should try putting an advert in your local paper and trying to work up his business gradually in his spare time, although I have no idea what fees he could charge. Maybe he should ask the small computer repair companies how much per hour they charge for labour and repairs, pretending he is a prospective customer. if he is a good communicator, he might also want to consider offering one-to-one basic instruction on simple computer applications like using the internet, Using Microsoft Word, etc. to beginnners in their own home. Many pensioners are now anxious to embrace technology but don't have computer classes locally and might welcome the personal tuition approach.