How to read the pictures
Valves marked in purple are pressed; with no valve marked, you play the note open. Several notes share the same valves: your lips and your air decide which one sounds.
F#3 – B3 6 notes
35 notes for trumpet in Bb, from F#3 to E6, each with a picture of its fingering. Notes with two names, like A# and Bb, share one picture. Notes are written pitch, as in your sheet music.