First and foremost... Welcome

Basics? Well, I think of so many things when I try to answer this question. As far as learning goes... be open minded. And rules? Only rules that you and your sub come up with.

I feel like I'm beating a dead horse yet again but... Google every type of play you see/hear/come across. i.e. breath play, bondage, submission, domination, switch, edge play, collaring, knife play, blood play, Gorean lifestyle. Be sure to throw BDSM in front of all those for a more accurate finding. I have found that the Wikipedia search results have other BDSM links within them. Please keep in mind that none of the readings you find are set in stone. As you establish your D/s relationship and try new things, you and your partner will find what you do and don't like. You will mold your play based off of your own needs. We all share the same general interest, but I feel every individual D/s relationship is unique in its own way. By exploring the world, you will be able to set soft and hard boundaries. I reccomend reading the first post in the forum, The A-Z of BDSM. There are a ton of things in that thread. It is a closed post, but it gives short definitions of many parts of BDSM and if you choose to explore more, there is Google and of course this site. Also, COMMUNICATE!!! Don't be shy when it comes to playing!!! The golden rule (and you'll see it over and over and over again) is SAFE, SANE, & CONSENSUAL!

I apologize if that's a very vague reply, but BDSM has so many different areas. I wish you and yours happy exploring.