Google - If you google AAU boys basketball for the city and or state you live in it should come back with some results. Of course remember club basketball is not cheap it usually is about $2k or so per year. Some are cheaper.
I know the Salvation Army in Phoenix has some good boy teams and the price is so low it is hard to believe! They are very good, went national last year from what I heard. Anyways hopefully that is enough to get you started.
