my, my, my oh MY!!! That last shot on the website made me belly laugh! 14-5. And after all those shots?!!! Looked at 'em all. Decent white balance on your shots. Colors looked great and overall exposures seemed good as well. Nice job there.
If that was your first effort, you came away with PLENTY of good shots. Do you have the focus assigned to the * button? If not, that helps a great deal shooting basketball. Also, camera in AI Servo focus and centerpoint only chosen? If so, keep that * button mashed down while shooting at the same time. This gives you the best oppty to get infocus shots. For basketball at that age, you probably only need 1/320 on the shutter because they're not moving really fast yet.
Definitely get down onto the court and as low as possible so we're not seeing the tops of heads. Those guys are way down there to begin with!
The only other thing I'd say is when the action is going AWAY from you it's time to put the camera down for a minute or two. But overall, you got a lot of balls and faces in your shots. Overall, VERY good first effort! Make sure to share those shots with the kids and their parents.
dave