Guitar Learning Resources
Here's some video channels with useful lessons etc:
JustinGuitar - LOTS of lessons on technique and specific songs
Stefan Grossman's Guitar Workshop - Great teaching videos on fingerstyle blues, folk, etc.
StevieSnacks - blues guitar lessons with a focus on SRV's playing
BerkleeMusic - videos from the Berklee College of Music, not just guitar, but lots of guitar info
BerkleeShares.com - more free lessons and videos from Berklee
GuitarLessons.com - lots of free videos
Songsterr.com - Guitar Tabs, extra paid features for metronome, speed adjustments and backing tracks.
There's also lots of backing tracks on YouTube which can be very useful. Search for "slow blues backing track E" for example and jam along!