guitar chord
F♯
A major third and a perfect fifth over the root.
Written the other way round it is G♭ — the same twelve keys on a piano, a different piece of notation.
Every fingering that fits a hand
244322
hard · barre
xx4322
hard
2443xx
hard
24432x
hard · barre
xx4676
hard
What is true of it
F♯ is F♯, A♯ and C♯ — 1, 3 and 5 counted from F♯.
On an instrument that cannot reach all 3, the 5 goes first, in that order.
The easiest of the 5 fingerings below is 244322: 4 fingers, one of them barring the 2nd fret, held at the 2nd fret.
None of them uses an open string, so this chord moves up the neck unchanged — the same shape 1 fret higher is the chord a semitone above.
2 of the 5 need a barre.
Where its notes are on the neck
The brass dots are F♯, the root. Everything else is a chord tone with its degree printed in it.
With a different note underneath
F♯/A♯
x1432x
F♯/C♯
x4432x
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.