It's had its share of misfires (Google Base, for example), but dominating just about half of all Internet searches, Google is far and away the first-choice search engine for millions of Web surfers. Still, there's a lot more to Google than its ubiquitous search box.
 
We put together a list of the 101 most important tips and secrets for getting the most out of Google's various services, broken down into 18 categories. Regardless of which parts of Google's empire are your favorites, you're bound to find something here you didn't already know.