Watch the Day 16 online guitar lesson by Ravi from Learn Guitar in 21 Days
Today, review some of the songs that you have been playing up until now. There is no reason to learn more if you are still perfecting others. So, pick a few of your favorites, as well as a few that have challenged you a bit.
Perhaps pick two songs--one easy and one that needs some work--from each chord category. For example, pick two songs using two chords, then two songs using three chords, and two songs that mix majors and minors.