I'm excited to read the newly revised edition of The Complete Boa Constrictor, too! Though I admit, the original reason I watched the above interview was because the little hypo blood boa that Vin brings out to show -- around the 12:50 mark -- is actually the exact one I just bought from him, haha! The little guy just arrived home on Tuesday.
@tickyyy: I think, if your main goal right now is to study up on boa care and husbandry for pet-keeping purposes, then the smaller book Boas in Captivity is a perfect fit for you. The big book mainly expands upon the history, taxonomy and genetics of the various boa subspecies/localities, as well as advanced care information that is important for boa breeders. Essentially, Boas in Captivity is good for a handbook/manual, while The Complete Boa Constrictor is more of a comprehensive reference textbook.