the numbers represent the frets, horizontal lines represent each string, and the vertical lines (i said it incorrectly in my last post) are the bar lines
G|-----------5--|
D|--------5-----|
A|-----5--------|
E|--5-----------|
the vertical lines should end the bar (measure) so if the song was in 4/4 time, that would be 4 beats. so every space between the vertical bars would be over 4 beats