Alltough both my Owner and I have had other people train/mentor us at different times He has often said the best teachers he has ever had have allways been the submissive herself.
Who better to to help him explore his will to dominante than the one whom he is dominating?
I also stongly reccomend that your man join the site here and explore the forums with you as opposed to adopting himself under any one dominant regardless of thier sex (which btw has nothing to do with understanding a sub any better than thier haircolor would) (nor would his assuming the role of a submissive for a time under said dom` ~ another misconception argued in the comunity with no basis in actual fact).
Good luck and congratulations in finding your man interested in bringing to futition the dream of a good D/s relationship with you!!!!