The razor "jumps" on my face when I'm too light on the pressure. It's as if the blade catches a hair, and just lifts the blade off my face.

Don't get me wrong, you don't want to push the blade into your face, you just want enough pressure to keep the razor touching your skin at all times, which really isn't much.

Also, I get a similar feeling when my lather is too dry. It's as if the razor stops gliding and starts plowing, which causes all kinds of weird things.

If you're using long strokes, try going shorter until the skipping stops. I presonally prefer long strokes, but it demands a lot more control and skill, so that could cause problems for a new user. If you're already using short strokes, keep at it until you get more shaves in.

Good luck !