You coluld capo at the first fret an play E positions, or bar
for an F. This is tabbed sans capo.
Most of the song is variations on this main riff, listen to the song and you can pick it up:
E------------------------------------------------------------------------|
B------------------------------------------------------------------------|
G---7-5------------------------------------------------------------------|
D-------7-5-------5-------5-7-5------5-----------------------------------|
A-----------8-5-8---5-5-8------8-5-8--5--3-3-5-5-3-3-5-------------------|
E----------------------------------------1-1-1-1-1-1-1-------------------|
[ Tab from: http://www.guitaretab.com/j/junior-kimbrough/69214.html ]
E---------------------------------------------------------------------|
B---------------------------------------------------------------------|
G---7-5---------------------------------------------------------------|
D-------7-5-------5------------------5--------------------------------|
A-----------8-5-8---5--3-3-5-5-3-3-5----------------------------------|
E----------------------1-1-1-1-1-1-1----------------------------------|
Partways through, he plays
E----------------------------------------------------------------------|
B----------------------------------------------------------------------|
G----------------------------------------------------------------------|
D----------------------------------------------------------------------|
A--3-----3-3-3-5-5-----------------------------------------------------|
E--1-4-5---1-1-1-1-----------------------------------------------------|
