Just a quick update, I’ve put a series of tutorials about guitar chords and guitar scales at http://www.howplayguitar.co.uk/ .
The chords tutorials show two different chords shapes for the major, minor, and dominant seventh chords. These two chord shapes can be used anywhere on the fretboard to produce any chord you require. I’ll be following these up later with tutorials for minor seventh, major seventh, and other chords.
The scales tutorials cover the minor pentatonic, major pentatonic, and minor blues scales. They show how the scales are played in different places on the fretboard. Again, these will be followed up later with different scales.