Here’s how to sign up for your free Twitter account:
1. Go to: http://twitter.com. If you don’t already have a Twitter account, you’ll see the welcome screen (see image). Click the big green “Get started - Join!” button.
2. On the “Create Account” page, first choose your username (what people will call you on Twitter). Tip: Keep your username as short as possible! In this medium, characters count! The form will let you know when you’ve chosen a username that’s available. Then choose a password you’ll remember, and enter your e-mail address (must be valid). Then, prove you’re a real person by doing Twitter’s “humanness” test, and click “I accept.”
Congratulations! You now have a Twitter account.
Next, Twitter will ask you if you want to check whether any of your e-mail contacts use Twitter. This is one way to find people you know on Twitter, but this step is optional. I recommend that you just skip it for now. You can return to it later if you want.