Drop D tuning has become popular as of late. In drop
D tuning the low E string is tuned down one whole step
to D. This enables the guitarist to play power chords
with a single finger. If your favorite band uses drop
D tuning and you want to experiment with this tuning,
by all means do so. What ever you do, don't learn the
guitar in drop D tuning-you'll get all mixed up.
To tune your guitar to drop D tuning, first make sure
your
tuned to standard tuning. Then you'll want to tune
your low E string down two steps to D(we drop it down
one step, hence the name). See the picture below. You
can use the audio clip below to tune your low E string
to D for drop D tuning.
An example of the use of drop D tuning can be found in
the song "Higher" by Creed.
It's a rich sounding riff because of the use of the open
strings. It takes full advantage of the drop D tuning.
Here it is: