Child play areas with sand or wood chips is an easy way to see what modern coins, and sometimes rings, sound and number at. I got my Simplex. popped it together, and went to a half frozen sand tot lot. I hit a few coins and a large mens Tungsten wrist chain. Then I put the machine in the closet for the winter. No whoop de do but this told me that this is just another machine to learn. The reason I say play areas (in front, under, and behind swings are good clad drop spots) is the commonality of coins in these places, and it is super easy to make recoveries in sand or chips. The more repetition, the more the sounds, (or numbers if you even bother), become intuitive. Another option to cut the learning curve is to take a silver dime, quarter, various clad denominations etc., and drop them on a "clean" piece of ground and see what they sound or read as. There is often a bit of number jumping due to the mixture of metals in some modern coins, but you get a general consensus of the coin numbers. If all of this is old hat to you please forgive. I don't know your experience level. Best of luck to you buddy.
