To prepare for commuting by bike, I bought a bike and start practicing around the neighbor to get better with controlling it. It seems that I have very poor control on the direction of the bike at medium low speed. When I get the bike up to speed, I wobble wildly back and forth for a few rounds of pedals before I can get it straight. Same thing for slowing down on a turn (especially if it is a sudden slow down). This is obviously not going to fly in a urban commute. Any suggestion on how I can improve my riding technique?