Blues Guitar Lesson at http://bluesguitarunleashed.com/youtube-4-note-solo/ if you'd like to get the TAB and downloadable versions of the videos.
This won't make a lot of sense without the first part. So you should watch that first at http://youtu.be/84cEzgO4Qwk before diving in.
This is one of many free blues guitar lessons I offer here on YouTube and through my email newsletter. If you like it, I would encourage to sign up as it's free and we have a lot of fun.
This lesson is based around the concept that soloing doesn't have to be hard to sound good. A lot of people think they need to practice a ton of scales and learn a bunch of theory - but blues music really doesn't work that way.
I've played just about every style of guitar over the years but I keep coming back to the blues and I'm sure there's a reason for that. It's wonderful in its simplicity but as BB King has said, "It's the easiest to learn and the hardest to master."
There is always a bit more to learn it seems.