Want to make better beer? Being a great homebrewer is about more than just knowing good recipes. If you want to be the best, having an understanding of the basic chemistry involved in making beer will give you added insights that can help both avoid potential issues as well as get the most out of your brews.
Brew Chem 101: The Basics of Homebrewing Chemistry, by Lee Janson, is an easy to read book about the basic chemistry of brewing. It uses non-technical language to explain the chemical reactions at each stage of the brewing process. Having this understanding will give you insight into each stage of the beer making process so that you can trouble shoot if problems arise, or avoid them completely!