About the F#sus2 chord
To play F# suspended 2nd, use the first shape above. Use your index finger to barre the 1st fret across the G and C strings. Place your middle finger on the 2nd fret of the E string and your pinky finger on the 4th fret of the A string. Strum all four strings and check that each one rings cleanly.
Root
F#
Quality
Suspended 2nd
Notes
F# · G# · C#
How the F#sus2 chord works
F#
Root(1)
The home note. It gives the chord its name.
G#
Major second(2)
An open-sounding second that replaces the third.
C#
Perfect fifth(5)
Adds strength and stability.