Look on Humminbird Side Imaging Forums- its all about side imaging and you can search topics that relate-lots of good info. I was gonna say if you can find a humminbird seminar those things are priceless as far as pulling it out of box and getting water ready. They had some at the grizzly jig show this past weekend.
But just start asking questions as you just have. there are alot of folks that understand the situation you are in and will help as much as they can
I have yet to have mine on water since installation but im going tuesday, so im not much help other than the notes i took at the humminbird class.
Tom
"The greatest use of life is to spend it for something that will outlast it".
William James