Originally Posted by gbx
A lot of people seem to hate it but I'm going to recommend Gordon Strong's Brewing Better Beer. It doesn't tell you how to do anything or provide step by step instructions but it gives a lot of really good tips on what you should be doing at a high level and leaves the process details up to you. And it is the only book i've seen that presents water chemistry for homebrewing in a decent, reasonable and comprehensible manner - no over-complicated residual alkalinity or make believe classic city profiles. It says its for "advanced brewers" but if you've already read How To Brew and done at least 1 all grain batch, you are "advanced" enough
As much as I hate to agree, this book is useful. Gordon comes across loving himself and writes a lot about how great he is as a brewer, which isn't great to read. But, it is useful, goes through the whole brewing process in detail and gives good information on various techniques that you can use.
I also found yeast and for the love of hops very useful. As well as principles of brewing science (although hard to read if not familiar with scientific textbooks)