also, minor thing but you've a grammatical error that's bugging me... it's "(the top likes) to be dominant" or "to dominate (the sub)" or "(the sub likes) to be dominated"

to expand more on Ozme52's comment, the first person you should talk to about rules and guidelines should be your partner. What do they want to try? What do they fantasize about? What parts of those fantasies are JUST fantasies and should be kept that way? What are their limits (for the session)? What are their hard limits?

strap-ons? feathers? blindfolds? gags? servitude? walking around naked? sex in public? crawling? eye contact restrictions? clothing restrictions? speech restrictions?