[Stirlingdesigns]

I learned this from a class I took:
-set your camera on a tripod
-choose av or aperture priority
-choose the lowest f-stop
-take a picture
-now take one picture at each f-stop
Load them up on your computer - note what the camera chose for shutter speed with each f-stop - how clear the background and foreground are

Now do with with both lenses you own.

Then start over but choose shutterspeed while focusing on a moving object (like a flower blowing in the wind) do the same thing take a picture at each shutter speed.

This is a great way to get to know your camera - and you will come to find your fav settings.

Have fun playing!