This is an introduction to how words are formed, showing how the component parts of words affect their grammatical function, meaning, and sound. It provides comprehensive coverage for use in undergraduate courses in morphology. It is written with great clarity by a world authority.
If one is totally new to morphology, it'd be a better idea to check Haspelmath's book first: Understanding morphology.
Otherwise, Booij's book is a thorough one (so many topics in so little pages!), and would be a great help as the quickest reference if someone needs to have only a glance to remember stuff!
این کتاب هرچیزی هست به جز اینتروداکشن [چشم غره میرود]
This is a fairly thorough introduction to morphology. As a non-linguist, my sense is that there was a fairly definite theoretical bias, and that's fine. The author draws heavily on Dutch for examples, but other languages are used as necessary to illustrate specific phenomena. All in all, I believe it presents a fairly balanced view of morphology from a theoretical standpoint. Related topics, such as psycholinguistics, language change and language acquisition are treated more briefly.