These three diagrams illustrate the root position (1 b3 5), first inversion ( b3 5 1), and second inversion (5 1 b3) of the Am chord.
The following example uses the root position, first inversion, second inversion, and an octave of the root position of the Am chord. Use the correct fingering as shown in the diagrams.
Here is a keyboard part making use of the first inversion of the A minor chord. Notice the interplay between the two hands in this part.