There are some important things that you must do if being able to jump higher is your goal. You can take short cuts and follow a haphazard routine hoping to get really good. Unfortunately if you are not focused on what it really takes to be able to jump higher you may make some gains, otherwise you will be just spinning your wheels. Below are few key things that you should consider in your training.
Flexibility is as important to your success at jumping as getting stronger. If you can improve your flexibility you have a greater range of motion, almost like being less resistant to movement. In addition it can help reduce injury.
Before you start your workout you need to do a warm-up. Being warmed up will help you make better progress and also help reduce injury. You want to just break a sweat, that is generally enough to get you started. Some light jogging or exercises is usually all that needs to be done.
Nutrition is as important as anything else. Eat a lot of junk food and you may perform like junk Eat good for your health and performance and you will feel better and have better recovery. If you're a little too heavy, reduce your weight. Don't starve yourself, just eat good food and cut back on some calories and you will loose weight with your workouts.
Recovery from your workouts is a big deal if you want to make some great gains. An over worked body will stop making any real gains in improvement and workouts will grow stale. Work out hard but give yourself time to rest and recover so you can keep working hard.