Watch the Natural Harmonic Melodies online guitar lesson by Jennifer Batten from Rock Sauce For Lead Guitar
In an effort to really get to know what notes all the natural harmonics are on the fretboard, learn to play arpeggios and melodies with just harmonics (being aware of the notes resulting from the harmonics you're playing). The harmonics played over certain frets are the same note names as if you picked notes there. However that's not always the case. For instance, the harmonics that come out when fingering over the 3rd fret, equal the note names you find by playing notes at the 7th fret, and not the notes of the picked 3rd fret.