>>7271298find a note you like with one finger, then on the next string find a note that sounds right with the first note, then do that again (if you like), go through them systematically(visit each note combination). One you have your first chord, play the chord and test going to a new note. Once you have that second "root" note, build a second chord using the previous method. Then keep building chords in the same way. Eventually you'll have a song.