Nano was my gateway editor when learning *nix in college. I tried vi only to have to close the window to exit. I think nano can continue to safely bring in converts from Windows and MacOS.
Everything i know about vi/vim is :q and :q!
it will probably take 4+ days to become faster editing text with vim than nano, and then you likely won't look back. Come back to the guide with decreasing frequency to add more knowledge to your vim arsenal.