This is my future vehicle, a VTOL military strategic cargo aircraft called the CV-1.

You can do a VTOL take-off using initially about 55 to 60% throttle, which you can increase from the moment the props are facing at least 45 degrees forward.

VTOL controls the pitch of the props and the aircraft has pitch trim.
Activate 1: VTOL stabilisation and lock/unlock prop pitch control.
Activate 2: Toggle cargo bay ramp.
Activate 3: Toggle refueling boom.

The aircraft is also equipped with flares.

VTOL control is pretty easy and forgiving on this aircraft but you need to get used to it for a bit. For landing I recommend putting the prop pitch to 45 degrees and 30% power initially, wait till you're about 100 meters from your landing spot and put the props to central position (VTOL neutral) while slowly increasing throttle (to max 50%) and pitching the nose roughly 5 to 10 degrees up.