By the way I purchased and etrac loaded with decent digger pouch headphones and a sun ray inline probe. Sweet deal at unbieveable price
Make sure you get the book by Andy Sabisch - it will absolutely shorten your learning curve.
One thing I did learn on my own was to start out running at the recommended sensitivity, and maybe a little less. I was getting sooooo many false signals it was driving me crazy. Not good for the trying to learn it mode. Once you get used to it, you can start to understand what it is saying.
And these charts you see about FE-CO coin values, do not absolutely depend on them. You'll get good coin signals which are well out of line with the values on the charts. Go for the tones themselves, but do pay attention to the values.
And! Go slow, especially when you hit a signal - even barely move the coil.
I used to try the Pinpoint mode, but was always off in the actual location. Look up Goes4ever's website on his pinpointing method. That is more accurate for me and I'm actually getting the targets in my first dig.
Pinpointing with the Etrac - Saving History One Piece at a Time
I find the E-Trac emulator was good for speeding up the learning curve on using the menu system. You won't find the software on MineLab's site unless you pay for Platinum membership. I forget where I found it now, except that I googled until I did find it. Really does help learning how to navigate quickly.
Good luck!!!
Hopefully this will help with some of the initial frustration you will have.