I too have recently made the change (from an X-Terra 70). I bought Andy's book about a month ago and in reading it, realized what I had been missing. Read the book page by page and highlight those items of great interest or importance to you. Get through the book and you will still be a little numb from absorbing all that information but on your second read, with the highlighted areas from the first go around, the light will come on and you will feel comfortable with all the features of the E-Trac and its functions. Download the E-Trac Emulator and get used to the functions and how to create and edit patterns, adjust settings, hear the sounds and I believe it will really help to bring it all together. Of course, you and I will lack the practical experience that will come from using the machine in the field but at least we'll have the headstart that understanding the functions brings. I feel that the last two years of swinging the X-Terra 70 will help my practical experience as well. Congratulations on your move to the E-Trac!
Idaho PRB