If you're an iPad enthusiast, you'll want to check out iLounge's free 156-page iPad Buyers' Guide. You can download the pdf file in three formats, each tailored to a different device: iPad/iBooks optimized, iPhone/iPod optimized, and PC/Mac optimized. The Guide features the 100 most essential iPad apps and covers the 24 different iPad models currently available. It also points you to a huge collection of the best iPad accessories. While mostly focused on the iPad, the Guide also has a section on Apple TV. And it discusses some of the rumored forthcoming products, such as an Apple TV set and the iPhone 5.