RSS stands for Real Simple Syndication. You can use it to get updates on the site. In Internet Explorer and Firefox, you can click the icon at the right, and it will let you manage your subscription:
For Google Chrome, you will need the RSS Subscription Extension (by Google).
You can also use any other RSS Feed reader you like. Some of them even send updates via email.
How do I use the forums?
There is an FAQ about the forums here.
I Still Need Help
You can ask questions here. Your question and answer may end up on this page, so asking us for help will help us too!