I just got a copy of this book recommended to me as the best book out there for learning the basic asanas. It's out of print, but I got a used copy on amazon no problem. I really like it a lot. I'm just an asana beginner and own lots of books on the subject, and this one really stands out as an excellent introduction to asanas for the beginning practitioner.
Yes, years ago it was one of the first books that I ever used and it does give the beginner a good foundation. Actually, even now I refer back to it every so often.