Watch the Take Your Time online guitar lesson by Jeff McErlain from Essentials: Advanced Blues Rhythm
This tune is a rocking blues in Gm with a distinct riff that defines the tune. The riff is not that difficult itself note-wise, so you should have no problem getting it together. But, making it groove is key (and the tricky part). Notice how the tune has a cool little bounce to it, we call that a swing. Swing eighth notes to be exact, if you play them straight it'll sound terrible. It's an interesting thing how much that can make or break a tune.
OK, so you think the riff isn't exciting to play? Well then, as the expression goes, you're not doing it right! I have often felt that a riff may have been too easy, only to hear a recording back and realize that I wasn't grooving at all.