How to read the pictures
Keys marked in red are pressed. Some notes show a second picture marked “Alternative”: another fingering for the same note. In the second octave many fingerings repeat those of the first; your air makes the higher note.
C4 – B4 12 notes
C7 1 note
37 notes for flute, from C4 to C7, 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.