It’s the art of re-arranging the notes of a chord in different ways.
In the key of C, the 1 chord which is C E G is in the root position, it can be inverted in two major ways:
E G C
G C E
To get the first inversion, take the first note and put it behind the last note
C E G becomes E G C – that is how the first inversion is gotten
From E G C, take the first note again and put it behind the last one; then it becomes G C E – that’s the second inversion.
So use this principle to invert every other chords that you know.
Lesson 1: Introduction to the Piano
Lesson 2: Brief Introduction to music
Lesson 3: Keys of the Piano
Lesson 4: Singing and playing on different keys
Lesson 5: Intervals
Lesson 6: Chromatic Scale
Lesson 7: Circle of Fifths and Fourths
Lesson 8: Key Signature
Lesson 10: Fingering for the chromatic scale
Lesson 11: Introduction to Chords
Lesson 13: Chord inversions