When creating an account on www.secondstep.org, you may see an error that says, "There was a problem with this Email Address. To try a different Email Address or to go Back to Login, use the Create Account with Different Email Address link."
This means that there is already an account in the system for the email address you're using to create an account. Try signing in instead of creating an account.
If you're having trouble remembering your password, this article will provide password reset instructions: I can't remember my password! What should I do?