M.K.
This book is definitely worth the money. This is an easy-to-read book about children at ALL AGES and the sleep they need. It also outlines the various sleep issues that children go through at each stage -- not just during the child's first year or two! It will tell you everything you need to know about how much sleep your child should be getting at every age -- and how to prevent and solve potential sleep issues. Dr. Weissbluth is the world's leading researcher on sleep and children. The book is organized into sections by age, so you don't have to read the entire book before you have information you can use.
Although Dr. Weissbluth recognizes and supports the family bed, he does not offer techniques on this approach. His focus is on methods to teach your child how to soothe himself back throughout the different sleep cycles throughout the night. He explains the rationale and "how to" for cry-it-out (depending on the age of the child!), as well as a "gradual extinction method" as an alternative to cold-turkey CIO. His primary focus is about the necessity of healthy sleep for a child's physical and mental development. (And he's got the science and experience to back it up.)
Your son is at a really interesting age right now. This is when Dr. Weissbluth believes a child is able to begin sleeping through the night. I think you'll find it helpful. It was a lifesaver for my family.