You can use corn, bread, cereal and many other baits. I always use corn. By cereal, I mean Wheaties or Bran Flakes or the like. Grab a handful, immerse and squeeze out the excess water.
If you use a sinker, use a slip sinker and fish with the bail open. Watch your line, they'll usually take off with the bait. All you need to do is close the bail to set the hook.
Get ready for some fun, they'll take you for quite a ride and make your reel sing.