Plyometrics are certainly beneficial, but for someone without the base of strength, coordination, and proprioception, something more basic like jumping rope would be better until that foundation can be laid.
For those who are still in high school and looking for workouts, there are a few coaches and trainers on here who'd be happy to share information. I think it's safe to say that any one of us could honestly say, "If we had this information when we were younger, there's so much more we could have done."