Hi Beachcomber
Welcome aboard
The small things are harder to find than bigger, so your off to a good start, When you get more familiar with the sounds different objects make at different depths, you will really start opening up possibilities.
When I get a new detector, I practice in the back yard or better still down the local beach, if that's where I intend to use it most.
Sweep over some coins, chains, and a ring or two and listen, both at surface level and underground.
Placing them on edge as well gives sounds that are quite different, but my point is, practice, practice, practice.
Time spent learning the capabilities of your machine converts into valuable time saved so that more good targets are recovered than bad.
Good luck
Bazza