Here is the master transposition chart. It can be
used for a couple of different tasks.
1. You can use the chart to find what a particular
chord shape would sound like when you have the capo on different
frets. For this you are using the top green row to tell you what
fret you should put the capo.
2. You can use the chart to transpose a song to a
different key, usually into on of the basic guitar keys (C G D
A E). For doing this you are going to work backwards. Find the
chords sound that you are looking to get in one of the capo fret
columns, then see if it will produce a comfortable open position
chord shape in the far left column.