This is an excellent article to help you get started, in my opinion. I would recommend reading it with your wife and talking about which parts you both find enticing and which parts you and she might not like, or might not be ready for at the moment.

http://underhishand.com/ds-relationship


PS. Lots of doms have a humorous side. My Master is one, and it's a good thing. I can't be serious all the time either.