I have just started teaching myself the guitar and am really loving it, but I am frustrated to tears with not being able to play some of the more difficult chords. They seem to require you to have about 15 fingers! How on earth do you play all six strings in different frets with only 4 fingers?? I just can't stretch my fingers that much without clamping down on the wrong strings or not being able to hold them down strong enough for a clear sound. Any advice would be great!