The learning curve on the E-Trac is as simple or complicated as you want to make it. Start with the stock coin program with just a few changes in your Expert settings.
Starrt your E-Trac up, the default will be the stock coin program. Hit your menu button, right arrow over to expert settings. Down arrow first thing you see is Recovery Deep default setting is off. I generally leave it off but if you are going to hunt where everything is deep you may want it on. Next down arrow Recovery Fast Default setting is off, I generally run Fast on, you toggle this off and on with either right or left arrow. Arrow down next is Trash Density, toggle High on for most usuages, unless you are in an area that is exceptionally clean. Arrow down Next setting is Ground, toggle this to difficult, this is pretty much a must setting for US hunting after making these changes hit the detect button. Now you are back in the standard coin program with these changes applied. Now hit menu button arrow back over to user modes. Arrow down to save, push right arrow then down arrow to first user mode then push right arrow, you should see the little disc symbol to the right. Hit detect button and you have saved all your changes into this user mode. If you turn off the detector and then back on it will automatically be in this first user mode with all the changes you have made intact. Your standard Minelab mode is still there of course under the Minelab modes you can never change those permantely only by saving under user mode do you get the program with the changes you wanted.
There are many other adjustments you can make such as audio, etc but do not mess with these until you get more experience with the machine. Below is a rough chart with numbers use them only as a guide not as absolute. Do not be afraid to dig trash as it is a learning experience.
TARGET FE CO NOTES
COINS
Clad Penny 12 37
Copper Penny (1959-1981) 12 41-44 Reads same as wheat penny
Wheat Penny 12 41-44 can sometimes spike as high as 46 but should bounce back around 42-44
Indian Head penny 12 33-37 Usually read around 36 but can go as low as 33 and as high as 40
Nickel 12 13-15 not sure how but war nickel (silver) will read the same sometimes
Dime 12 44-45
Quarter 12 46-47
Half Dollar 6-8 47
Silver Dollar 01 41-43
Large Cent 12 46
2 Cent piece 12 40
Flying eagle cent 12 23-24
Relics
Shotgun Shell 12 20 air tested - think CO should be higher
Skeleton key 12 38
Large button (quarter size) 12 47 Large military button Circa 1850's
Civil War Minnie Ball (.58) 12 32
Civil War Minnie Ball (.69) 12 33
Harmonica Reed 12 33-35
Square nail 35 42-46
Jewelry
14 k white gold ring 12 10 found at 5-6 inches, air testing read at FE 12 CO 5
1o Kt Womans ring 12 4
14 Kt Mans wedding band 12 31
18 Kt Band 12 3
Trash
Screw on bottle cap 12 35-40
Round pull tab 12 21-23
Tin foil 12 1-4
Square pull tab 12 18
**Important note*** Most Coins, Relics and Jewelry will be around 12 on the Fe side. Several things can effect this including depth, near by objects and Ground Mineralization. Most of the time the Fe side will stay between 9 and 17 on objects that fall along the FE line