How to Use is a brand new social music service that launched in June of 2011. It has quickly gained a lot of traction among the tech elite but I think this site has the potential to be HUGE. It's a terribly addicting service that allows you to listen to music in a social way with friends. The game mechanics also make for quite a sticky service that makes it hard to pull away. I personally haven't been this excited about a site since Twitter back in 2007.

i love our educational pivot... quality work @bracco! YouTube - How to Use - Overview than a minute ago via bitly Favorite Retweet Reply

Also, check out some the YouTube playlist which includes the other videos in the how-to series.