Some chords are just plain hard to play. Whether because of finger strength, dexterity, or muscle memory, some chords are hard. In our curriculum, we hold off on teaching those chords until the more advanced classes. But since those chords are part of many songs we teach, we introduce students to a beginner version of the chord (or a different chord all together).
Not all chords have a beginner and advanced version. But the ones that do are available here. But in an effort to include all varieties of all chords, we're presenting both here. So select "beginner" or "advanced" to find the chords that are right for you.