Plyometrics are great for most anyone, especially athletes. Because of this, they might not necessarily be for all beginners. Plyometrics are essentially jumping exercises which can place a lot of stress on the body. Some people might not be ready for this. If you are injured, check with a doctor first. This a great reference for beginners to the advanced, showing the broad range of plymotrics as shown by coach Mike Boyle.
http://www.strengthcoach.com/public/1301.cfm