^ little freaky, but the first one is what I meant by schoolgirl method.
Looking for an example I found a better way to show beginners the rythmn: http://www.youtube.com/watch?v=quoyW7FZqdI
4 basic tips:
1. Jump the minimum amount you need to jump over the rope (about half an inch). Most beginners take jumps that are way too big and set them up to not be ready for the next jump in time.
2. Music with a standard 4/4 beat, jump on each beat. I don't like music for anything else while training, but I almost need it for jumping rope.
3. Use the type of ropes with plastic links covering the rope. It maintains its U-shape and swings/rotates/keeps its momentum more easily. You can feel where the rope is more easily (because it has weight) and it's very easy to keep it moving with just your hands/wrists (really should only use your arms for the first 1-2 swings of the rope to get it going). It will also hurt your barefeet more when you miss which will encourage you to not miss jumps...
4. Begin with straight up and down jumps obviously if you have issues doing more than 10 without stopping, but asap move to switching feet, 1 or 2 jumps on one leg, 1 or 2 on the other, switch switch. It's simple and getting this down opens up the door to being able to do a lot of tricks with the rope later. You may say you don't care about being fancy, but jumping straight up and down for 5 mins x 3 rounds is boring as **** and you won't stick to that routine for very long.
I was assuming the OP has been trying to jump rope for a while but keeps hitting the same problem if he can only do 10 jumps before tripping up. He's vanished so we can't ask what his specific problems are. I made a guess that he was jumping too early, thus not having a sustainable rythmn for more than a handful of jumps.
"Just do it right" is good advice, but sometimes other advice is useful. The video above and my previous advice were aimed at the remedial level for someone who jumps too early.
I have been trying to jump rope for a few weeks now, had to sideline it, but plan to pick it up routinely once winter hits here and my bike is locked down.
My problem is my hands and feet are not in-synch (with a host of other issues such as hand position and jumping WAY over the top). I have gotten a lot of great advice here, but haven't had time to really put it to use yet.