The beginners curveball is a great pitch for younger pitchers. In essence, this pitch does the exact opposite as a fastball. Where as a fastball spins from the bottom to top (which is known as "backspin"), a curveball spins from top to bottom. And instead of leverage coming from behind the top of the baseball (as a four-seam fastball), leverage on a curve comes from the front of the baseball.
A straight curve requires mastery of my beginners curveball, because many of the same principles that apply to both grips. This doesn't mean that you have to throw a beginners curve (most pitchers actually start right out with this pitching grip). But the beginners curveball is a good place to start. Then, of course, this pitching grip is the next step. That's because there is essentially no significant difference between a straight curveball and a beginners curveball, except for the finger placement of your index finger. It should be placed on the baseball as opposed to pointed at a target.

Ok, so I know this whole page has the best baseball pitching drills on it, but out of this whole page, these are my two most favorite drills. The first is the wall drill and the second is the rocker drill. The second drill in this video is the same as Stevie’s favorite pitching drill that you’ll see below, but I go into a little further detail on how to perform this pitching drill correctly in this video. Check it out!