Forget the old days of calling the operator or 411 for a businesses phone number. Call 1-800-GOOG-411 to get connected with local businesses or to get directions to your favorite restaurant. For full details of what you can do with this visit the Goog-411 page.
You can send a text message from your phone to 46645 or G-O-O-G-L and type weather followed by your zip code to get current weather information. For many other uses of this service such as movie times, addresses, stock quotes, etc. visit Google SMS.
Google can be used just the same as a calculator to enter a math problem. Google will calculate it and give you the answer. To do this just go to google and enter the problem like 2 + 2 = and it will return the results as 2 + 2 = 4. You can even do more advanced problems like (8 x 4) + 12 = which returns (8 x 4) + 12 = 44