Femdon girl friend sub male?

I am trying to locate info for my GF who is in charge but has never ben in charge in a relationship before. I am a total sub and an AB/DL and this is all new to her. I am NOT into BD/SM and not into pain in any way. Rather I am into her being in charge, her rules, etc. Can any one recommend any websites and maybe a book or two for her so she can get advice from those who are better able to explain these things and maybe learn how to do it better and better over time?