I started using it just as a markdown dumping ground and over time refined my use. It came naturally to me. If your team is using some complicated system that nobody explained to you, then I can't blame you. Notion can definitely be as complicated or as simple as you want it.
This echoes my experience. None of it was complicated enough in practice to cause me to seek out documentation, let alone a tutorial, and over time its more complex utilities became apparent organically through my own needs, which it met on most occasions.
It should be possible to use the vector embeddings produced by an image to text (AI) model as database identifiers. The text tags produced by this type of embedding could replace most human metadata entry required for object registration with AI suggested metadata and human approval.