F Major 7th

The first shape is the easiest voicing: 4 fretted strings and 0 open strings. Put your middle finger on the 2nd fret of the G string. Put your pinky finger on the 4th fret of the C string. Put your index finger on the 1st fret of the E string. Put your ring finger on the 3rd fret of the A string. Strum all four strings and check each one rings cleanly.

Fmaj7 is F, A, C, E. Those notes make a major 7th chord. Play them in any order and you still get Fmaj7.

Dreamy and floating: a major chord with a soft shimmer. At home in jazz, bossa, and ballads. Chord quality is the interval pattern above the root. That pattern is what you hear as major 7th.