Good questions. I hope this answer will help, and that it may help some other people as well.

From the main Radiant Recovery web page at http://www.radiantrecovery.com/
click on "YLD Members" over on the right. You'll be asked for your YLD username and password.

That brings up the YLD Members user manual.

Just a little down on the page in the YLD Members user manual, you will see "Click here to get help & information for the YLD Email Lists". Click on that link. (The lists for YLD aren't forums like the Radiant Recovery community forum. They are email lists through Yahoo!Groups.)

This will take you to a page that will give you all the detailed information about the lists that I think will answer all your questions.

Follow all the instructions to sign up. Don't forget to read all the way to the end - so you can also see how to sign up for YLDfoundation.

Since these are email lists instead of "forums", the messages posted to one of the lists do not show up in the other. You should always make sure you are a member of the main YLD list.

Hope that helps.
Kitty