Sight reading chords is a great exercise because it uses two mental muscles at the same time: identifying notes on the staff, and identifying chords based on the intervals and chord tones used.
This lesson series uses a combination of information from several other series.
The "Sight Reading" series will help you learn and practice identifying notes on the staff.
The "Tones 1" series will help you with chord construction theory and practice identifying chord tones.
The "Extended Chords" series will also help you with chord construction theory and chord identification practice, on the fretboard.
Because this series builds on other series, the quizzes in this series will not have corresponding diagrams in the lessons. If you find the quizzes too challenging, go back through the series listed above and study. Have fun!