First, if you have a few bikes, get the one with the shortest wheelbase.

Next, dont even try to ride yet, just practice yanking it up from a standstill
and jump off the back. Do this 'til it fluid and effortless.
Timing is everything

Now, ride slow, in about 3rd gear. Too low a gear and you spin out too
fast, too high and you cant pull up easily.....
While rolling along pullup on a pedal down stroke but keep your body
straight up and down. It takes lots of practice. Use your arms only !
Pull up til you feel the balance point which you definitely will, cuz
everything gets real light and scary pedal real smoothly and look
ahead to the horizon, not down. If you feel like you are going to go over
tap the back brake. Thats all ! Very simple

Pull up using arms- keep torso straight up and down - pedal slowly and
smoothly - look at the horizon