Once you have your Yahoo ID and you have associated all your groups with it

then you will need to edit your account for mail preference

When you go to

http://groups.yahoo.com/mygroups

You will see this screen, but it will have all your yahoo groups

Click on the "Edit My Groups" Link

And you will get this screen

You can now set each group for the email address and way you want to view it

Either Individual Emails, Digest, Or no Email

There wasn't that easy?

Also at the top of the page on your groups page you will see in the top right hand

corner a place to set up your profile that will appear at Yahoo

http://groups.yahoo.com/mygroups

Click on that link and it will take you to your account and you can edit your profile there.

I hope all of this has helped. 

Look for more help pages soon.