Plastic balls, Circle's or otherwise, are generally lousy balls to learn to hook. They will hook if thrown "right" or on the right lane conditions, but they're not designed to hook like resin or particle balls.
You'd be better off with an entry-level resin ball like the Tropical Storm, Jolt, Roto-grip Planet-line ball, Power Groove, Scout, or Ebonite Element-line ball.
SH