How to play Sweet Home Chicago

Short good quality lesson on how to play "Sweet Home Chicago", popular blues standard credited to Robert Johnson.
The list of artists who have covered this blues song is really long and includes such names as Magic Sam, Buddy Guy, Earl Hooker, Freddie King, Luther Allison, Robert Lockwood, Jr., Keb' Mo', Status Quo, Johnny Otis, Fleetwood Mac, Eric Clapton, Stevie Ray Vaughan, The Blues Brothers.

"Sweet Home Chicago" was also the song that US president Barack Obama sang together with BB King at a White House tribute concert as part of Black History Month.