Take care of that shoulder man. Here's my advice:
Don't do anything that hurts. Anything.
Do these 3 exercises twice a week:
Rotator Cuff Strengthening Exercises
Target your rear delts at least once a week. I found that at the very beginning mine were extremely weak and that the reverse pec deck worked really well. I have since graduated to face pulls. However, do whatever feels comfortable.
That's what worked for me. Mileage may very. I'm sure sooner or later someone is going to come along and tell me that I am full of crap, that's how it seems to work on the forum, but this worked for myself and I wanted to share with you. Good luck.