gehenna, as pointed out by Capn Bloggs, what files have you actually "ripped' to your PC? Can you see as many files on your PC as there are tracks on your CD? If your CD had 12 tracks, can you see 12 individual files, their names usually being the names of the individual tracks and hopefully each ending with the suffix '.mp3', on your PC?
Furthermore, you state "but when I sync it to a USB, I cannot hear anything!" Sync? Why not just copy the files (assuming they are appropriately ripped and useable by a music player ...) to the USB (stick?) like you might copy any other sort of file (photo, document, etc) from one folder to another? If you are not an expert, as you say, it usually pays to keep the processes simple.