Watch the Strumming Chords online guitar lesson by Rich Maloof from Acoustic Guitar For Beginners

Now that you know how to keep a strum going and how to play a chord, you can start making music.
As we learned in Lesson 3b, the music we're playing here is based on a four-beat measure. Those four beats can be broken up evenly into quarter notes (1 2 3 4) or 8th notes (1 and 2 and 3 and 4). Once you're comfortable playing a chord cleanly, you can start strumming quarter-note and 8th-note rhythms of that chord in steady time. Try to get your right hand strumming steadily, as if on auto pilot, before you add in a chord.