Knowing the chords will not make a you a good chord player. Without optimized movement your rhythm will always sound imperfect and amateur.

Changing chords involves so many finger level movements, each of which you have to optimize. That is the basis you have to master before you try any further rhythm and chord playing.

• Which finger groups should move together?
• Which are the common fingers that should not move?
• How do you prepare your fingers?
• What does the thumb have to do with chords?
• What does structural mechanics have to do with barre chords?
• How to build substeps to move from open chords to barre chords smooth and sure?