I wanted to pay off my unsubsidized loan early, but I cannot find were do I start paying ... I tried the NSLDS site and looked around this site, but I don't see anything. I looked at the FAQ and I might have missed something because I don't really see the options.

When you login to NSLDS you should be presented with a list of your loans. On the left there are numbers that, if clicked, bring up more details about a specific loan. On this page you are able to see your "Servicer/Lender/Guaranty Agency Information" and it provides contact information for your servicer.