Download the PDF of the 'Guitar Chord Slide Rule', print it out, fold it together and you'll have at your disposal a very neat tool that will not only show you all the positions for the main flavors of chords, but will also teach you a very important lesson about the guitar works. You'll also be supporting the ever growing GfB&B site and helping to keep it free.

It consists of a folded sleeve and six double sided inserts, instructions for cutting it out and folding it together are included with the PDF ... it's very simple to do, and if you botch it, you can simply print it out again!