I'm a user from Reddit, and looking trough the r/BDSMcommunity I find about this lady that had an active role on there. Answering and helping people in Reddit and in her own website. Very helpful too! (Is in my bookmarks but I can't find it right now)
She wrote the book of the title and I LOVE IT.
It is a novel about her own experience in the BDSM that change her life.
You can find it Amazon. Both version. Paper and Kindle.
And if you are a Reddit user she would probably e-mail to you for free. I buy the kindle version for about $4.
Regards.