Watch the Home Sweet Home online guitar lesson by Jeff McErlain from Solo Factory: Chicago Blues
Here is a classic I7 cord lick that I borrowed from Magic Sam's excellent version of the Robert Johnson classic "Sweet home Chicago". The repeated triplet rhythm on the top is reminiscent of the other blues classic "Dust my Broom". In the blues will see a lot of these repeated motifs and ideas, it's part of the blues vocabulary. It's essential we get these ideas under our fingers so this is a great one to get started on.