Every fingering that fits a hand
2000
open
200x
open
2003
open
2050
easy · no 5
2403
easy
What is true of it
Am is A, C and E — 1, b3 and 5 counted from A.
On an instrument that cannot reach all 3, the 5 goes first, in that order.
The easiest of the 5 fingerings below is 2000: one finger, held at the 2nd fret.
3 of them use open strings, which is what makes a shape quiet to change to.
Where its notes are on the neck
The brass dots are A, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
Am/C
x000
Am/E
x453
An inversion is the same chord with a different note lowest. The name changes to a slash name because the bass is what a listener hears as the foundation.