WARNING: THIS GAME IS VERY COMPLICATE
When starting the simulator, you will see a configuration screen. Set everything to desired values.
Click [show] in the keybinds section to see all the controls which are similar to previous simulators. They can also be edited here with the edit button.

[W], [S] - Increase/decrease thrust
[←], [→] - Elevators
[Q], [A] - Increase/decrease flaps by 1 notch
[E], [D] - Increase/decrease spoilers (multiple modes)
[G] - Toggle landing gear
[B] - Increase wheel brakes

Other useful keys:
[P] - Pause
['] - Play one frame
[-] - Zoom out
[=] - Zoom in
[/] - Toggle mouse controlled yoke (pitch)
[[] - Set zoom to 10%
[]] - Set zoom to 60%
[\] - Toggle audible alarms (e.g. GPWS)
[.] - Toggle elevator automatic reset
[R], [F] - Increase/decrease elevator trim
[T] - Toggle TO/GA
[M] - Toggle audio
[I] - Toggle extra buttons panel
[4]-[7] - Switch between FMC displays
[Click and drag vertically on IAS dial] - Change A/T IAS target