The picture shows the aircraft hovering; how does it do that?
The F-35 has what is called the Rolls-Royce LiftSystem. This Contains one lift fan in the middle of the aircraft, and a rotating jet exhaust to provide vertical thrust, and two rotating nozzles to provide stability. The pilot pushes a button, and doors on the aircraft open for the lift fan, while the exhaust nozzle rotates downward. The pilot controls the thrust and pitch/roll, while a computer double checks what he does to maintain stability.
Actually, the picture above is USMC (US Marine Corps),s F-35B, which he have a STOVL (Short Take-Off and Vertical Landing) capability. That aircraft hovers using a Rolls-Royce Allison fan to lift itself. The Rolls-Royce Lift System works like this image: The lifting system itself moved by the F-35's engine. The pilot works at the pitch of the fan, meanwhile computer countermeasures how to maintain stability. The pilot itself could push a button or use voice-activating system to open the lift-fan's door.