Slide Guitar

This is a 3.06 minute video response from David MacKenzie on Nov 1st, 2008

Question:

"Evilhedgehog asks, "I would absolutely love you guys forever if you would do a lesson on how to properly use a slide (bottleneck?) with an acoustic guitar. I know this is pretty popular in blues styles and I would greatly enjoy being shown more about how I can actually work this into practice music. The biggest question I guess I have though, is what are some popular tunings to use when utilizing a slide, or are there really any special ones?""