Same old problems with everyone mate! The best way i found to train myself was to force it upon myself....ie...

Want to learn to scratch with the up faders - take the x-fader out

Want to learn to scratch with your left hand - Take your right deck out of the room.

When it comes to beat jugling, things get a bit diiferent. Its best to get your speed up on the juggle, b4 moving onto being creative with it. Get really comfertable moving between each deck and x fader, and then incorparate the other faders in, pitch sliders, and eq knobs. When uve got these down to a T, then start tryin to get some complicated rythms going.