A quick share on two posing books that I really like. The first is 500 Poses for Photographing Women: A Visual Sourcebook for Portrait Photographers it's a great inspiration right before going out on a session. The book is divided up into chapters based on the type of pose - head and shoulders, full length, seated, etc. Not much to read in this one - more for inspiration. There is a brief section in the back that has the basic tips for those just starting out.
The other is Mark Theil's Ultimate Posing Guide. Mark is actually located pretty close to me in Central Ohio. This book has been highly recommended on many photography forums that I've been on. With so many rave reviews, I decided to pick it up. It's been really helpful. Mark's book also has tips and tons of images. Mark's book also focuses on female posing.
Now ... if I could just find a book on posing guys, that would rock! Both books are a must have for your collection. They've been great in getting inspired right before some recent senior sessions!