The common questions would probably be:
-What mode to shoot in?
-What ISO to set?
-What focus mode to set?
My tips would be:
-Shoot in whatever mode you are comfortable with. If you are most comfortable in the Auto mode, then switch into a scene mode (i.e. sports) if your camera has it. Otherwise, shoot either Shutter or Aperture priority, or manual.
-Depending on what action/sport you are photographing, you want to specifically set up the camera. This is where Manual mode is nice. Quickly able to set both Aperture and Shutter speed to suit the scene and the subject. ISO depends on your event.
For example, outside in daylight, photographing fast moving things, you might need to bump your ISO up to around 400 or maybe 800 to be able to stop/freeze the subject. Unless you have a fast (f/2.
lens, in which case you might be able to just use ISO 100/200.
Indoors basketball will most likely require a higher ISO, like 800 or maybe 1600 in order to freeze the subject.
With manual mode, you can always set the exposure values, and then check your light meter to see how your exposure is doing. Whether it's overexposed or underexposed depending on the graph. So setting your f-stop and shutter speed shouldn't be too hard.
Focus mode/Metering mode:
-AI Servo modes work the best for moving subjects. Refer to your manual to see which AF mode works best for moving subjects. Now; Metering, depending on your mode and your event, Evaluative metering could possibly work better. But if your subject covers more of the frame, then use Center Weighted Average, or spot.