The key thing with these home exercises is to do them everyday. You can’t just do it once or twice and expect to see a difference! So pick a time of day that you are going to do your exercises e.g. before your morning shower, and then do it! A lot of the exercises are like crunches I think where you are on your back, so you could pin some pictures of pretty ladies and six packs on your bedroom ceiling for inspiration and motivation!!! Haha!
Also join a club or something at school, get into a sport that you enjoy and you’ll see your overall fitness improve really quickly 🙂