I taught myself the basic 4-5 folk cords in A, C, D, E, F, and G without ever learning the names of all the cords much less any more obscure ones by name. So when someone is kind enough to put the cords for a given song on a thread, I'm in the weeds. Can somebody tell me how to download some basic cord diagrams? I know you can buy a book, but would like a quick cheat-sheet if possible. Thanks for any help.