Barre chord
fret 2, E shape244222
F♯m is the F♯ minor chord. Its notes are F♯, A and C♯. It is the same chord as G♭m. The lowered third gives this triad its darker color.
244222
x-9-11-11-10-9
Numbers show frets from the low E string to the high e string; x means don't play that string.
F♯m is the ii chord in E major, the iii chord in D major and the vi chord in A major. That makes it a natural fit in songs written in those keys.
Every F♯, A and C♯ on the first 12 frets. The filled dots are the root, F♯. Build your own shape from any nearby group.
Other F♯ chords
Other minor chords