Thanks for the advice. I've been storing the rope on a coat hanger and it's losing the tangles. Still working on technique... I can jump for a minute or two but this is with double bounces. I am told that jump rope is actually less stressful on your knees than running because your impact is mostly on the forefoot and ideally you're not more than two or three inches off the ground. I'm only doing this a few minutes a day though to allow my feet and joints accustom to the shock.
I never did this as a kid, but compared to running, this feels fun. I can only imagine how much better when I can do this w/ music and for 10-15 minutes at a stretch.