A fantastic guide to hops, put together by the folks at Brew Your Own Magazine. Not only is this a nice reference chart to help you make those important hopping decisions, but the bulk of this magazine is centered around how to brew the best with hops. There are project walk-throughs, dry hopping tips, extract tips - you name it, and it's about hops, it's in here.
First of this is more of a book than a mag. It features numerous top notch recipes such as Bells Two Hearted and Sierra Nevada Celebration. Gives you all the info you need to buy, store and grow your own hops.