Loading guitar
The Bmaj7 chord is the notes B, D#, F# and A#. The usual shape is a barre at the 2nd fret: x 2 4 3 4 2, from the low E string to the high E. The guitar above is set up with Bmaj7 on the R key, labelled Cbmaj7 (the same chord): tap it or press R to hear it, then strum the strings.
Numbers are fingers: 1 index to 4 little
The same chord, higher and brighter
Play it as 7 x 8 8 7 x, a closed shape. Switch the guitar's chord level from Standard to Up to hear it.
These share a key with Bmaj7, so they sound right together, and they're on the pads next to it:
All the chords: guitar chord chart. Songs to practice them: easy guitar songs. Tune up first with the online guitar tuner.