"SM 101 a realistic introduction" is an excellent introduction for anyone into SM. The book starts out with baby step introductions into SM, filled full of useful information, and continues to explain a lot of more advanced topics in the realm of SM erotic play.

The author Jay Wiseman explains thoroughly his experiences and expertise on the subjects of SM, Flagellation (whipping, flogging, spanking), Clamps, Lubes, Humiliation, Relationships, Organizations, Safety, and where to find more resources. Overall this book covers a great deal on the topic of SM.