Plant Propagation (RHS Encyclopedia of Practical Gardening) (ISBN 1840001569)

Great for Beginners:
This is an excellent propagation book. The propagation methods include step-by-step drawings and some suggested plant material. I use it for the greenhouse I just started running. This book shows you everything from scoring and sowing seed, cutting techniques, layering methods, grafting techniques, plus more. It also includes instruction on how to propagate shrubs and trees. I would recommend it as a great resource even for the more advanced.