If you find the idea of a Gravatar appealing (or if you did in the past and wish to change things), this is how you can get on to the Gravatar system.

Log into Gravatar

The site is gravatar.com. You're presented with an introductory screen:

To Create an Account

Click Sign Up with the blue button. You'll use your email address and provide a password. Yes, it creates a WordPress.com account, they're joined.

To Log In to an Existing Account

In the upper right corner is a Log In button. Click that and enter your email that you signed up with and your password.

If you have lost your password, you can look to recover your account with the link towards the bottom.