If you're not logged in, you can reset your password by clicking the Forgot your password? link on the Facebook login page.
If you're already logged in, you can reset your password by going to your Account Settings page, located in the Account drop-down menu at the top of every Facebook page.
When choosing a new password:
- Use a combination of at least six numbers, letters, and punctuation marks.
- Don’t pick a word from the dictionary.
- Don't pick something you've used as a password on another site.