Complete
If you're interested in information architecture, and I mean seriously interested in it, this book is well worth reading. It's a comprehensive and practical reference that could sit on your desk as you work through your first client briefs or coursework projects. It's a little dry in places and could be brought up to date for the responsive design and app era, which is why it's three stars. But the fundamentals are strong - it's all about the user and the research, remember?
It also benefits from Donna Spencer's extensive commercial experience - this is not an academic book, and arguably, is all the better for it.
Highly recommended.