So you learned all of your chords in the first lesson. You can keep track of where you are in the chord changes and improvise over the three different phrases of the blues from the second lesson. Now lets put it all together. Below is the background for the Bb blues. Have fun and remember to start simple. Well placed notes that show which chord change you are on is better than a bunch of fast stuff that doesn't have any purpose.
12 Bar Bb Blues
12 Bar Bb Blues