Let's begin with the intro riff.
Here we have a classic type of texas-riff, which lends heavily from country guitar playing, but is played in a shuffle beat. Many country ideas can be used in rock and blues, it's just that most of these country lines are played with a straight feel, whilst the southern rock and blues are often played in a shuffle beat (and with distortion of course). This part will get your chicken-picking hand in order, so get to work!!