Every fingering that fits a hand
320003
open
32000x
open
350003
easy
35000x
easy
320033
moderate
What is true of it
G is G, B and D — 1, 3 and 5 counted from G.
On an instrument that cannot reach all 3, the 5 goes first, in that order.
The easiest of the 5 fingerings below is 320003: 3 fingers, held at the 2nd fret.
2 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 G, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
G/B
x2000x
G/D
xx0003
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.