This document provides an introduction to chord progressions and chord symbols used in guitar tablature. It includes: 1) A chart showing the I, IV, and V chords in the key of D major, along with their chord symbols. 2) Examples of chord progressions using the I, IV, and V chords in D major to accompany common worship songs. 3) An explanation that learning basic chord progressions is a starting point for learning to play or interpret music by ear.