If you're ready to move on and formulate you own recpies you *HAVE* to get this book. Designing Great Beers: The Ultimate Guide to Brewing Classic Beer Styles by Ray Daniels.
Has tons of info on and the characteristics of each style, as well as the history. All the "style" chapters end in bullet point summaries of the ingerdiantes and methods for those styles.
Also the history of every style is a fascinating read, if you a beer geek . Really, get this book and you won't be sorry.