As stated, I got the cheapest Baofeng 888s set and a programming cable. (Worth having because you can set many options)
Any radio you buy will be set to random frequencies and should be programmed to the frequencies HERE (Same as the ones Rogerborg posted. I used the analogue frequencies)
I had a chance to test mine out with my son at our last game and they worked great.
As long as you don't hear other people who sound like ambulance, police, taxi or other official services, you should be fine to use it.