Joining Facebook is straightforward:
Go to www.facebook.com.
If you see the signup form, fill out your name, email address, password, date of birth, and gender. If you don't see the form, click Sihgn Up, then fill out the form.
Click Sign Up.
You will receive a validation email from Facebook; follow the directions in the email.
You don't have to add a profile picture, but it does help everyone if you have a clear picture of your face.