Start with video. Go deeper when something matters.
Technical aviation videos become easier to use when they are connected to aircraft, ATA systems, resources and learning paths instead of living in an endless feed.
Useful starting points.

Airbus A321 #1 wheel assembly change. THIS IS REFERENCE ONLY.
Stig Aviation · 9 min

Boeing B747-400ERF, Wheel change, Miami International Airport
Dennis Vijverberg, Brakes Released · 16 min

GE90-115B inside and out.
Stig Aviation · 10 min

Airbus, A350, APU start close up. Afterburner?
Dennis Vijverberg, Brakes Released · 8 min

Airbus A350 RRXWB startup with jet airstarter.
Dennis Vijverberg, Brakes Released · 6 min

A DAY IN MY LIFE AS AN AIRCRAFT MECHANIC || EPISODE 4.
peter janded · 21 min

1. Boeing 737NG Airplane Familiarization
CBT Corner · 9 min

Boeing B777-300ER APU startup.
Dennis Vijverberg, Brakes Released · 7 min

Boeing B787-8 engine start with APU inoperative
Dennis Vijverberg, Brakes Released · 8 min

B777-300ER GE-90-115 engine startup.
Dennis Vijverberg, Brakes Released · 5 min

Dry Motor Leak check
Zeto.r · 3 min

PMDG 737-700 Engine Failure after takeoff in Innsbruck | Real 737 Pilot and Air Traffic Controller
A330 Driver · 53 min
Watching is the entry point, not the end.
Use the full video page to connect what you watched with source-grounded technical resources, Quick Reference and structured learning.