I go to Tri-County Technical College which is less than five minutes from Clemson so I can help you out here.

There's two bus services in the area. Electric City Transit serves the Anderson community and Clemson Area Transit serves the Pendleton, Clemson, Seneca, and Central area. CAT and ECT both go to the Walmart/Sams Club in Anderson so you can hop off an ECT bus and get on a CAT bus or vice-versa there. ECT costs money to ride and CAT is FREE to ride. CAT is the largest fare-free bus system in the country.