I have always thought of myself as having above average intelligence, but not having grown up with computers I find myself at a real disadvantage when trying to understand how to use the Humminbird PC software. I reformatted a 4GB SD card from my camera and have put it into my new 798ci hd si unit, but want to understand how to load files to and from my PC, and add way points from my PC that I can see using the bigger screen. Do any of you know of someone who makes a good video tutorial for HB units? Or anyone live in the Nashville area that could walk me through some of the steps? Help please! Already tried what Help I could find on youtube.