The Protected category  is also free but you need a password.

It's a wild web.

safe

You can request a password here.

This password will be valid for any free and protected content that might be added to this site in the future.  For Protected Classes you might need this password to get into the main page and also use it for the username and password to get to the class site.

(Separate access will be issued for paid content aka Free Enough.)