Good ECS learning resources?

[marceline-cramer]

I'm putting together a design document on how ECS works within the Mondradiko core engine, and I need help finding some beginner-level resources for understanding what ECS, how it works, how it can be used effectively, etc.

[Turtle1331]

A-Frame's page on ECS: https://aframe.io/docs/1.2.0/introduction/entity-component-system.html

[MilesLitteral]

https://link.medium.com/ddW526owdib

[MilesLitteral]

https://gamedev.stackexchange.com/questions/141562/should-entities-auto-register-to-systems-based-on-their-component-signature