Is it a potential problem to use the same email address for the class site and a family site? Especially in reference to the forum. I had a situation where I was signed onto the forum with my class site and then signed onto the family site. When I clicked on Help forums it accepted me as the class site.

I believe it's just defaulting to the first one. Nothing to worry about. If you want to get all eamils in your same email box, but want the Forums link to work separately for both sites, I'd simply set up email forwarding, which is free, and make up an email address at your family site. If you click the FAQs link above, then click on Questions About Email, you can see how to set up email forwarding and point your pseudo email address to your regular email address so all messages continue coming to the same place, while you have two distinct logins for your two web sites.