padon

so im considering buying a helix 7 di with gps.the main reason I was considering a new unit is because some of the small electric only lakes I fish in PA are not charted.which leads me to needing auto chart I assume to make my own.only problem is im a moron when it comes to computers etc. can someone give me a general overview of how it works etc? alos I was considering adding lakemaster or navionics, it appears that navionics offer more coverage of the lakes I need , will it work with the helix 7? also can I chart on a micro sd card and the creat maps on navionics social maps? sorry for all the questions its tough be a computer idiot in the new age of bass fishing.