Burnside, and Kimbrough I've heard, great riffs there man. I don't have anything posted in that style, but I know Doug Fearman has plenty blues lessons. I don't know how much slide stuff we have on here though, but some of the riffs might be covered. If Doug doesn't have what you're looking for, then I'll try to put something up in Burnside's style.
JD
Latest Tutorials
Bending The Flat 7 To The 1
Chicken Pickin'
Hybrid Picking Exercises: One Finger
Hybrid Picking Progression In A
Double Stop Progression In A
Crosspicking Combinations
Behind The Nut Bends On The G String
Behind The Nut Bends On The B String
My Lessons
http://www.youtube.com/jdfenderbender
myspace.com/jdjarrell
myspace.com/guitartrickscountry
twitter.com/jdfenderbender
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Latest Tutorials
Bending The Flat 7 To The 1
Chicken Pickin'
Hybrid Picking Exercises: One Finger
Hybrid Picking Progression In A
Double Stop Progression In A
Crosspicking Combinations
Behind The Nut Bends On The G String
Behind The Nut Bends On The B String
My Lessons
http://www.youtube.com/jdfenderbender
myspace.com/jdjarrell
myspace.com/guitartrickscountry
twitter.com/jdfenderbender
facebook.com/jdjarrell