If you're new to Android (or even an old pro) and are looking for some even more collections off how-tos, tips and tricks, we've got a couple books you should check out (in addition to Android Central, natch).
Droids Made Simple (Apress), by Gary Mazo, Martin Trautschold and Marziah Karch, is written for owners of the Droid, Droid 2/Global and Droid X and is full of screenshots and step-by-step instructions. It's available in eBook format for $17.49 or in hardcopy from Amazon for $24.99.
Android Fully Loaded (Wiley), by Rob Huddleston, is an instructional book for the entire Android platform, from camera use to music to e-mail. It's available for $24.99.
Full disclosure: Droids Made Simple and Android Fully Loaded were tech edited by our own Phil Nickinson, who also is Huddleston's long lost cousin. They're all still talking to Phil even after working with him.
See also: My Droid by Craig Johnston.