Brand New to guitar?
Beginning Blues Guitar Unleashed (BBGU)
Cowboy Chord player but no Barre Chords or ability to solo?
Blues Guitar Unleashed (BGU 2)
Acoustic Blues Guitar Unleashed (ABGU)
Classic Rock Guitar Unleashed (CRGU)
Someone else asked a similar question recently and I gave him a list of more advanced courses:
For building your own solos:
50 Slow Blues Licks By The Box
50 Classic Rock Licks By The Box
For complete solos built by Griff
5 Easy Blues Solos
5 More Easy Blues Solos
5 Easy Blues Songs
Blues Gig In A Box Vol 1 & 2
Blues Solo Construction Kit - Slow Blues
Blues Solo Construction Kit - Shuffle
Blues Speed Building Blocks
Classic Rock Speed Builders
How To Solos Like:
How To Play The Blues Like Chuck Berry
BB King
Stevie Ray Vaughan
Albert King
Killer Blues Solos Made Easy
Slow Blues Supplement
Solos From The Masters (Albert King, Peter Green, Freddie King, Otis Rush, BB King, Joe Bonamassa, Johnny Winter, Matt Schofield, Magic Slim, Robben Ford, Jimmy Vaughan, Robert Cray)
As you can see there are LOADS of courses for you to pick from. My suggestion is get access to them all by joining the All Access Pass (AAP). That way you can look them all over and study the ones that seem in your wheelhouse.