C G Am F
e|-------0-----|-------3-----|-------0-----|-------1-----|
b|-------1-----|-------0-----|-------1-----|-------1-----|
g|-0--0--0--0--|-------0-----|-2--2--2--2--|-------2-----|
d|-2--2--2--2--|-0--0--0--0--|-2--2--2--2--|-3--3--3--3--|
a|-3--3--3--3--|-2--2--2--2--|-0--0--0--0--|-3--3--3--3--|
e|-------------|-3--3--3--3--|-------------|-1--1--1--1--|
You need to format it in a mono-spaced font so that it spaces correctly (use the "courier" font, which is installed on every modern OS that I know of).
The names at the top are the names of the chords (in your example C, G Aminor, F), then read the portion below, which looks like the six strings on your guitar, from left to right, as a bar of music.
So the first bar is a 'C', play it with four beats, the first two are only the A, D and G strings, the third beat is five strings, and the fourth beat is back to three strings ...
Hope that helps.
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Richard
-[ Musician, writer, guitarist, singer ]-
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