YouTube has a wealth of tech related content. Not just unboxing videos. Here are some of my favourite channels for software engineering content.
A wealth of computer science and history of computing topics covered in an in depth, but approachable manner.
TechWorld with Nana
A tonne of high quality easy to follow tutorials on DevOps, Docker, Kubernetes.
Excellent insights into software development processes.
A great resource for C#/.Net, with coverage of new/upcoming features, including lots of in-depth performance comparisons.
Inspiring Homelab videos, lots of ideas for how to setup and run a server in your home.