I found that listening to the blues is a great way to learn. There are so many great blues guitarists out there to choose from. And they all have different styles and ways of playing the blues. That's another great thing about the blues, there are so many different styles and forms of it that you're bound to find some stuff that you can really connect with.
Blues guitarists all have their own style. The licks and riffs they play are all based on simpler riffs that they've manipulated and made into their own. The more you play the basic riffs, the more it's going to be burned into your brain. That's when you really start to get your own style.
Some really great blues guitarists are John Lee Hooker, Muddy Waters, Buddy Guy, Robert Johnson, Stevie Ray Vaughan and Eric Clapton. Those are just a few names, there are so many other great blues guitarists out there to listen to it's pretty mind boggling.
Find a few that you like and listen to their playing. See how it makes you feel and why it makes you feel that way. Learn their songs and play them until you can play them in your sleep. Then you can start to change them up to suit your style. If you want to know more about how to learn blues guitar go to www.TeachYourselfGuitarToday.com.