What ever you do, don't EVER bring a water bottle with you on a bike. If you can't ride a bike and shift at the same time, you don't dare drink water while riding.

The last person I saw that could not steer a bike with one hand was three years old, but it WAS his first day of riding. If an adult can't steer a bike with one hand, they seriously need to consider a new sport, maybe checkers.