6.7 Combining Em, Am, D, and G chords - Advanced Strumming video
Tunefox Guitar Lesson #6
Now that you've gotten your basic switching down for all of these chords, it's time to add in the bum-ditty pattern.
This chord progression is slightly different than Lesson 6.6 to encourage you to practice switching in a different context. First, take a look at the progression and strum each chord once. If it helps, say each chord out loud when you play it. Once you have the progression in your head, try adding in the bum-ditty and alternating bass pattern.