It will be helpful to lower the seat. If your seat is high, its hard to get your second leg over and you end up riding seat out front. One annoying thing is when you have two feet on the pedals and the free hand to comes along and offer its assistance by gripping the seat. Use one hand to hold the front of the seat, and the other hand for balance. You may wish to start out with the wheel against the curb so it could only roll forward until you feel more comfortable with the start.
Speed is definately a key factor.
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