Dont be scared, be excited! It is not at all complicated, but if you think it is just turn it on leaving the power button depressed for a couple seconds and it will start in the factory presets. The factory presets will find you plenty. You will learn it in time. If you think that it is complicated then it will start to get real heavy and you will want to sell it, LOL! I can tell you now that it is NOT a heavy machine. My arm feels worse after swinging the exterra, one of the lightest made.
I was where you are at a couple months ago, I am loving my new SE. In two months I have found what took 6 months on the exterra, and that is at the same three locations that I hunt! Very impressive machine.