Download sonic visualizer and chordino for basic chords and scale. You can use chordify also. Suspended and 6th chords are decorative which are used while transition. https://www.youtube.com/watch?v=RiQ-D4e0WrY&feature=youtube_gdata_player https://www.youtube.com/watch?v=gbth1ZxhYZo&feature=youtube_gdata_player