3. Use Triad Chords
When you decide you are ready to try out some chords, best to begin with the most basic: triad chords. The triad chords are built using the 1st, 3rd, and 5th notes of the scale. Experiment with playing them all at once, and then in broken chord style (one at a time), and with different rhythms and styles.
For most pop songs, you will notice that some chords are more important than others for every key. In a major key, the most prominent chords would be the root, subdominant (4th), and dominant (5th). Thus, in C major, the important chords are C major, F major, and G major. Once you have mastered these three-chord triads, you will be able to improvise on a multitude of songs in the key of C major!