Watch the I See Seven online guitar lesson by Jeff McErlain from 30 Smokin' Blues-Rock Guitar Licks You MUST Know
This lick is particularly useful at any tempo. I'm basically outlining a C7 chord with an added blue note. Take your time and run through this one slowly and I think it will end up being well worth the time.
I'll take this moment to talk about learning your guitar history. Be sure to check out the following guitar players: Robert Johnson, Son House, Skip James, B.B. King, Albert King, Buddy Guy, Freddie King, Albert Collins, Eric Clapton, Peter Green, Jeff Beck, Jimmy Page, Jimi Hendrix, Alvin Lee, Mick Taylor, Paul Kossoff, Robin Trower, Uli Jon Roth, Joe Walsh, Eddie Van Halen, Ritchie Blackmore, David Gilmour, Gary Moore, Randy Rhoads, Jake E. Lee, Tony Iommi, Martin Barre, Leslie West, Robben Ford, Joe Satriani, and Steve Vai, just to get started!