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 Music College, not just guitar, but lots of guitar info
BerkleeShares.com - more free lessons and videos from Berklee
GuitarLessons.com - lots of free videos
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!