To begin your journey, listen closely to the handle. It will not speak, but if it were to whisper, it would say: turn left once, then right thrice, stopping only when the moon wanes. Should the handle hum a melody, you've gone the incorrect way. Retrace your steps and consider the reverse of what's spoken in silence.
Locate a key which exists yet does not exist. It's found beneath the shadow of a raven, three paces north of the forgotten tree. If the raven is absent, the key is closer than you believe. Seek within yourself, for the door unlocks to those who know not how to unlock it.
Your final step involves restructuring the threshold. Take measurements that never seem right, calculating with a specter’s touch. If the door appears ajar, congratulations, you have fabricated a door that is not a door, thus mastering the unopened principles.