from a virtual standstill (but clipped in with both feet), give a hard push with your dominant leg (for me, I always use my right leg, starting at 12:00 and pushing hard). You can try this both sitting, and standing, but I recommend fully seated first.

Next, try to do this and complete a pedal rotation (keep those fingers over the brake lever! If you feel yourself going over backwards, a tap of the REAR brake will put the wheel back down). I can go for about three full pedal rotations doing this.
Should I be braking when I make that hard push?
Because if it is just making the push, I just go forward.

(I am feeling wickit duh right now...)