Youtube is your friend. If you still aren't getting the hang of it, there are electronics guides who for a reasonable fee, set it up for you and show you how to read it properly. I used one for my Humminbird and it was well worth it.
I have learned a lot over the week I have been playing with my graph. One thing that I can't figure out is every time I go fishing the GPS Will not follow me on the water. I have looked and messed with it but nothing. Im sure its just a setting but for the love of all things holy I can't fix it. Any Help?