Well I have circulation issues, so I'm taking it really slow. My current routine:

-- Some very light weights with few reps. No dips or shrugs.

-- Qi gong, but with modifications as needed to work around my issues. Mostly avoiding raising the arms overhead too much and reducing the circumference of any arm circles.

-- "Postural" and "therapeutic" exercises that come from Egoscue, PT articles, and "Fixing You: Neck Pain & Headaches".

-- I finish up with some sitting meditation with the arms propped up, and then static back.

I usually feel pretty good after the above.

Overall, my arm symptoms are minimal and pain is way down. Dizziness remains a problem.