Hi there! I’ve recently produced a free ebook for those interested in getting into BDSM, entitled Playing Around: An Introduction to Kink for the Curious.
Playing Around is written from a queer feminist perspective, and includes advice on not only technique but on ethics, consent and safety.
The book is available here.
I’ve gotten a lot of people asking for advice on how to get into BDSM- skimming through the book, this one looks like a pretty good intro.