Watch the The 2 For 1 Sale Pt. 1 online guitar lesson by Shane Theriot from 30 Mojo Rhythms You MUST Know
Here's a couple of variations on a progression that pops up quite often in New Orleans music. It's a I to IV (both dominant 7th) progression. This is a great template to try out new voicings and rhythm parts. I'm really emphasizing the downstrokes to make this one groove.