Hi again,I just did a search to see if I could find anywhere on the net where there might be some simple explanations of chrods, basic chords and chord progressions.
Have a look at this site - I'm going to go back and work my way through it because I think it's got what I need to know.
http://www.dreamscape.com/esmith/dansm/chords/chords.htm
Try this page first because it shows how the chords in Major keys are made up - based on I, IV, V (0r 1, 4,5) notes of the relevant scale.
http://www.dreamscape.com/esmith/dansm/chords/keys.htm
Helen