Working with a closed kinetic chain e.i. individual muscles are great for many reasons. If you have any muscular imbalances in the shoulder, knee, upper body, lower body etc. You can use closed kinetic chain exercises to regain balance. I would recommend it to everybody who are under rehabilitation for specific injuries of e.i. the shoulder, elbow, wrist, or of the hip, knee, ankle regions.
Closed kinetic chain exercises are also great for building definition for different muscle groups.
If you want to make an exercise program and you feel like you don’t know where to begin, I highly recommend the web-pages below as help. But remember, the best help is to ask somebody experienced.