Pick a song either from a song book or with an internet search using keywords like 'lyrics, chords' etc. Try to find one with mostly major chords, which have only one symbol like A,B,C,D,E,F,G. If there are a couple that have an 'm' (minor chord) or '7' (seventh) that's okay.
Don't worry if your chords have different names than the basic chord pad shapes. If your song contains chords like these, check out the TRANSPOSE section which will show you how to create and store them, using the basic shapes generated above.