Courses like everything vary a great deal, there are so many aspects to bodypainting, and it is very much a case of working out EXACTLY what you want to learn and then looking for the course that will fit your personal requirements.
Quite often the best in the world give lessons , but it is all according to your budget and what skills you want to learn.
Another way of learning is to team up or assist a bodypainter and learn hands on , then develop your own style from there.
Also look out for postings on here for pro bodypainting days that are put on where you can come along and either join in or watch or team up with someone and gain experience in that way.
Also get along to top quality competitions and watch the best competitng, note the different styles techniques etc you will be suprised at how much you can pick up from someone just by watching
The world of bodypainting, is a world on its own and most within it are willing to share
Pm me if you want a more detailed explanation of whats going on where and who is giving instructions and where.
PS. the offer of answering pms on bodypainting questions is open to anyone , especially if they feel they dont want to air what they are looking for in public
Or Juliet eve, London based, and 10th best in the world (one of the winners at Austria last year), is lovely, I have worked with her on a job for Christian christian Audigier and shes a Fab artist her, and really nice person, she has showed me how to do loads of stuff. This is her FP web site but she has another somewhere, cant remember what for body painting, http://www.julieteve.co.uk/