Watch the Insurance Policy online guitar lesson by Brad Carlton from Chord Studies: Evolving Progressions Vol. 1
This is a I - IV - vi - V progression in the key of E. Notice the fingering for the A chord finger be two, one, three. This is so that you can use your first finger as a guide finger when moving from the E to the A chord. Make sure on the C♯m and B chords that you mute the sixth string. Although you're not playing these strings, this acts as an insurance policy to help keep those chords clean.