How to Use Twitter with Your Cell Phone

1.
Go to Twitter.com and hit the 'Join For Free' link.
2.
Go to the 'Settings' link on the top of the page.
3.
Select the 'Phone & IM' link on this page
4.
Enter in your cell phone number, including your area code, in the 'Mobile Phone Number' text box and hit the 'Save' button. If you wish to receive updates on your cell phone from Twitter, check the box next to 'It's okay for Twitter to send txt messages to my phone. Std. rates apply.'If you're outside the US, precede your phone number with a '+' and your country code.
5. Wait for Twitter to send you a text message saying 'That worked! What are you doing now?'
6. Update Twitter by sending text messages from your cell phone when you're on the road, riding mass transit, waiting at the doctor's office, or whenever you're away from the computer. If you opted to receive updates, you'll get text messages from Twitter whenever your friends send their updates.