How do i come up with a password that will work on facebook?

This info comes form the Facebook Help Center...
https://www.facebook.com/help/292105707596942/

When you create a new password, make sure that it's at least 6 characters long. Try to use a complex combination of numbers, letters and punctuation marks. If the password you entered isn't strong enough, try mixing together uppercase and lowercase letters or making the password longer.
The password you create should be easy for you to remember but hard for someone else to figure out. For extra security, your Facebook password should be different than other passwords that you use to log into other places, like your email or bank account.


Personally I recommend at least 8 alphabetic characters with 3 or 4 numbers and at least one special character like one of these # $ %.

Don't forget to write your password down in a secure location. Don't let your friends know your password, and don't let anyone know where you keep your passwords written down.

Click on "forgot my password" and go from there.