[ame="http://youtu.be/QSfn7wN7Uuc"]http://youtu.be/QSfn7wN7Uuc[/ame]
Not a long clip because I didn't want to stink up the garage too much
You need to do the pedal dance, otherwise it'll basically cut the engine.
Clutch in
~4500 RPM
Dump the clutch, and immediately get on the brakes with your left foot
You might not figure it out the first try
You'll need to play with how much throttle and brakes you're giving. If you see your revs are dropping give it a little less brakes.
Just make sure there's nothing around you, and if you feel like you're going to hit something or get into trouble or whatever, then clutch in, and brakes if you need to.
Hope this helped