Here are some general tips though.

F-stop 2.8 = means, a VERY wide opening for light to pass through.
As a result, you will have a VERY short depth of field.

F-Stop 16= means, a VERY small opening that light passes through. Result = a very deep depth of field.

So if you want to control your depth of field, then set the Apertaure priority.

1/60th Shutter Speed = SLOW.. (think a highway at night where you can see the brake lights on all the cars, and all the lights on the cars are streaking.)

1/500th Shutter Speed = FAST.. (Think a helicopter in the air, and the picture makes every blade on the helicopter, look like it's frozen in the air.)

So if your shooting sports, you might want the FAST shutter speed at 1/500th. You will see that DIVER stopped motion in the middle of the air.
-- But if you use a slower shutter speed, 1/60th, your photo might show the diver MOVING.. Like a "Streak" as he does his twist and his turn. The reason is, you are shooting a longer period of time. Your camera is receiving more of the action.

But the longer you keep your shutter open, you are going to have to use your F-stop, to prevent too much light from coming in. So you raise your F-stop. (from 2.8 to 5.6) to adjust for your Shutter speed going from 125 to 250. as an example..

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"When two people agree on everything, one of them is not necessary" - Arliss