When you first start learning chords you will probably have a hard time changing from 1 chord to another smoothly. The purpose of this lesson is to teach a good way to change chords.
For anyone who has already learned chords this example maybe too simple, but you can substitute another chord more difficult chord progression for this lesson. The chords we will use are:
First take the first 2 chords Em and C and learn to finger each chord without the muting strings and having a clear sound without buzzes. The way you do this is to make your fingers more upright so your fingers don't mute unwanted strings. To elminate buzzes make sure your fingers are right infront of the fret. Practice each chord seperatly. Once you can finger each chord move to next step.
Now practice changing from the Em and C chord. Practice by strumming once then change chords and then strum. Start slowly.
Use a metronome and try to strum on every beat. Start at 78 beats. Keep doing this until you can change chords perfectly.
Now move work on the C chord and G7 chord. Then do the same with the other chords until you can play the whole progression
THe example on the bottom is just a basic strum with down strokes on every beat. I would do something more complicated but this is not the purpose of this lesson.