Now its time for you to go to gym.(time for me to go to sleep :( ) Start with the lightest weights. begin with above to motions and more. Once you develop strength then you can try adding tennis like movements using pullies too.
Couple of weeks and you should be good to go. Now when you start tennis don't play against an opponent yet. In pak they had those walls close to the tennis courts. For players to practice. That way you can anticipate your motion and set your self accordingly.
PM,
I in fact started with the walls too instead of the court. Ill definitely start with your suggestions. Thanks!