Watch the Jam Track Analysis pt. 2 online guitar lesson by Brad Carlton from Guitar Lab: Melodic Options

The progression that you'll be playing over for this entire course is I - V - IV in the key of E major. Examples 1a and 1c present the chord voicings, which include power chords, sus2 structures, add9, and add4 voicings. Examples 1b and 1d depict the rhythm that you will play when playing the chord voicings along with the jam track. I'll explain the strum pattern in example 1d in depth in the accompanying video.