Beth,
Yahoo should NEVER need credit card information.

If you go to http://groups.yahoo.com, you should be able to sign up. Many of us have been members of Yahoo for years and if you make sure, when you're signing up, that the questions like "can Yahoo share your information with it's partners?" are NOT clicked, then you should be okay.

I encourage you to go back and sign in. The classes are well worth it!!

Kitty