Harmonics are bell-like sounds that are achieved in various ways. For those of you who haven't done these before, i would recommend starting with the easiest. All you do is lightly touch each string directly over the 12th fret with any left-hand finger. Strike the string and release the finger immediately.
The notes on the musical notation have a diamond shape and above the stave you will see 8va which indicates that the notes sound an octave higher.
The other 'easy' Harmonics are at the 5th, 7th and 9th also don't forget the 12th frets. However, this time you will find that the notes produced by these harmonics are not the same as notes indicated on the tablature. In other words, if you look at this, where the strings are touched directly over the 5th fret, the notes themselves are E A D G B E, 6 5 4 3 2 1
Harmonics at 5th fret.
Notes produced are : E A D G B E
Harmonics at 7th fret.
Notes produced are : B E A D F# B
Harmonics at 9th fret.
Notes produced are : G# C# F# B D# G#
Harmonics at 12th fret.
Notes produced are : E A D G B E
