Welcome Kevin,
As you have seen, probably, there are many of us who use the Etrac in this area, so I am sure you'll be getting out with some of us soon here. My biggest starting suggestion is to get and read Andy Sabisch's book on the Minelab Explorer and Etrac series. Second suggestion is to swing low and slow. Third suggestion is to hunt 30 tones (or the highest # possible-I forget) Conductivity -- Learn to hunt by sound and not #'s. Fourth suggestion is to ditch the coin discrimination pattern, you'll read about patterns in Andy's Book. With that pattern you'll miss some coins (I go with blocking out FE 24 and below, Co 8 and below, FE =1 Co =30 to 38, Fe =1 CO = 43-45, FE = 1 Co =49-50. This will make sense to you after you read up.
I'm sure others will pipe in with a lot of other thoughts.