hi,
no problem.
If you look at a song in chordie, to the right hand side there is a box that says transpose. It is above the box for different instruments, banjo,guitar uke etc.
If you go to the transpose box and click on any of them the chords on the song will change,
i.e
If you have a song and the chords are B G Eand then you transpose them 2+ then it transposes the chords up two notes so the song will be C# A F#
( two notes up from B = C, C# as there is no B#. G = G# A. E = F F#)
if it is transposing 3+ the B would become D the G would be A# more commmonly known as Bb and E becomes G
now, when you have no cappo on and play a G chord it is G, but if you have a cappo on the 2nd fret then it makes that sound of G go up two notes to A, even though your fingers are holding down the shape of a G chord.
I hope this helps. Go to a song, any song and try it.
You might find that certain songs dont sound good to you when they have the chords that are posted with them and you might find you can sing it better when you transpose the chords. I find lots of songs starting with a D chord really irritate me so I transope it 5+ ( meaning it goes up 5 notes) and start playing the song in G, then most times I can sing it better without straining the old vocal chords as much.
any probs ask again and I might try and get it on video and let you know
Ken