Walk and click and smile and walk, that's all there is to it. Of course it also helps to live in a heavily populated area! Try Street Photography in rural Alaska and you will find that your number of "keepers" dramatically declines.
Street photography is photography at its most basic. Get the shot no matter what. Everything else comes second. It took me a while to get over the notion that everything must be planned, perfect, and sharp and I blame my involvement in stock photography for this attitude.
Now that I have shed myself of all the boring photography rules, I feel like this hobby is finally fun again!
