Guitar

• JustinGuitar.com has a great dedicated Blues Lessons section: BL-000 • Blues
• a great series of lessons on youtube, starting with: Blues Guitar Lesson 1 - Blues Rhythms
• blues guitar lesson solo - 1/3  

Slow Power Blues 

• Slow Power Blues Guitar Lessons - Andy Aledort - T-Bone Influence 
• Acoustic Blues Guitar Lesson - In the Style of "Bad to the Bone" Listen to Bad to the Bone from ZZ top
  

Blues authors and songs:

• Muddy Waters - Hoochie Coochie Man check Chuck Berrys version too
• Muddy Waters - got my mojo working
• BB King

Jazz and Rock & Roll came from Blues. The older Rock n Roll songs still have a lot of Blues in them:

• Chuck Berry - Johnny B. Good