Where would a student go to get a flash drive/info on them?

They can get a flash drive (aka USB key, jump drives) anywhere they are sold. On campus they have them at the UStore, they also sometimes have them in the Office Supply Vending Machine downstairs in the Learning Commons.
You could ask for information on them at the Learning Commons and Technical Support Desk and someone there may be able to help them.

Do the PC's on the Main Floor take USB keys?

All of the computers on the Main floor take USB keys. All of the OIT computer classrooms also take USB keys.
*USB key - Also know as a Flash Drive, Jump Drive etc...