Hey, wanna learn how to do harmonics?  Here it goes.

What is a harmonic?
You may ask.  Well, a harmonic is a beautiful effect used mainly on acoustic guitars that provide a warm, rich sound.

How do you do it?
A harmonic is formed by fretting a note but not actually pressing the string down to the fretboard, but sort of muting it instead.  Then, as you pick the note you let your finger pull off, creating a chime-like tone.  Harmonics usually have "hot spots" on the fretboard where the are easier to sound.  An example would be the 12th fret, which can be used like this:

e-12-h-----------------
B------12-h------------
G-----------12-h-------
D----------------12-h--

(Click Here For An MP3 example)

By the way, h meams harmonic in tab.  You might also see it as *in some tabs.  Practice that allot.  It probably won't come naturally at first but over time you'll get it and when you do it will have a lot of applications in your music.  Here's one last example.

e-12-h--------------12-h---------
B------7-h-----12-h------7-h-----
G----------7-h---------------7-h-

(Click Here For An MP3 example)