F major chord
Here's how to play the F major chord, which should be played using fingers 1 (index) and 2 (middle).
Changing between just two chords repeatedly is the fastest way to improve chord changes.
Recommended chord changes to practice
C major to F major
C major to A minor
Learning any new skill takes time. How much time varies on the experience and transferable skills you bring.
The finger exercises in the previous lesson along with drilling the recommended chord changes above should allow you to get playing songs using these chords as soon as possible.