Devil,
I would suggest that you have him complete a checklist. Then from the checklist you can determine what it is you like and then start his training in that area.
I have attached a link to a thread that has the checklist information. It is under post #13 my Nightstriker. The second and third links. I found the checklist very helpful in learning my skills as a mistress as well as learning more about my pet's needs. Do remember that his is there for your pleasure so enjoy yourself. Then if you need help just tell us the topic on the checklist. We can then try and give you some ideas. There are a lot of good links in this thread with some good information.
http://www.bdsmlibrary.com/forums/sh...ight=checklist