As simple and weird as it may sound... Google search BDSM... if you click on the Wikipedia link, there will be other links in that. I feel seeing BDSM and actually reading about BDSM are two completely different things. Also try these:

BDSM Rope Play
BDSM Breath Play
BDSM Edge Play
BDSM Suspension
BDSM Sensation Play
BDSM Blood Play

Granted you may not be interested in all of those, but I have found that I have shown a respect for all aspects of the lifestyle. For instance, my Dom and I dabble in blood play. We find it very erotic and it seems like a very personal thing to do. He feels that he drank the soul of his slave into him. Now, a lot of people don't really care for that. However, in this type of company there is a respect and understanding of the kink. As you learn the lifestyle and try new things, you will learn exactly flips your switch.

My biggest insecurities when I started were a huge factor on my outlook. I had to make sure first and foremost that this wasn't just a major psychological issue playing itself out. I had to learn to be sure of who I was and what I was and wasn't ok with before I could fully agree to submit and lose all control. I was also afraid that something would go horribly wrong. My first experience with breath play almost turned to panic. My Master picked up on my body language and instantly loosened his grip.

I hope that bit of information helped. When and if you squire a sub, communicate tons. Each D/s relationship is different. Each is molded into what works best for the two involved and no two relationships are the same. All of us here in the Library share a common interest, but we are all very unique.