Everyone has used drill bits at one time or another. Drill bits are usually found at the bottom of your toolbox and have a rusted and dull look and feel to them. Today there are as many specialty drill bits as there are drills to put them in. A common drill bit set from Sears or the local hardware store is fine if you're not going to use them on a daily basis. You may want to invest in a better set at some time or another.
Drill bit sizes can range from 1" to 1/16". Carbide steel drill bits are pretty common as the standard material. Stainless steel bits that can get expensive depending on their size and there are bits that come with special starter tips on the ends, which takes the place of having to drill a starter hole.