Click http://www.mikesmusicroom.co.uk/chordbook.html to download the complete keyboard chord book which includes 12 major chords, 12 minor chords, 12 seventh chords and 12 minor seventh chords.

The three keyboard chords in this video are:
A Major Chord
E Major Chord
B Major Chord

Second hand Casio keyboard for sale at:
http://musical-instruments-uk.mikesmusicroom.co.uk/Electronic-Keyboards/Casio