Sue, there is a 2GB memory card already installed, and I have set it up with all the settings to just go out and start sailing. I have the charger, cable and CD roms in the box at home. If you decide to keep it I will give them all to you.
It is fully charged so should last you for several weeks of sailing without needing a charge.
So don't stress about the details. Just turn it on, strap it on and go sailing!

or even bike riding, would be a good way for you to test the ka72 upload etc.