A course, a fingering chart and a listener for electronic saxophones such as the Yamaha YDS-120 and YDS-150. The app hears what you play, over the USB cable or through the microphone, and keeps your practice history.
Getting a note to come out the same way twice. Mouthpiece in about a centimetre, lower lip cushioning your teeth, and steady air. Nothing else matters yet.
Goal: Hold G, A, B, C and D for eight slow counts each with the loudness meter staying flat.