While simple query statements do work in advanced queries, I advice against that route.
- it can cause problems with understanding and learning as you saw yourself
- in the backend one gets converted to the other anyway
This is possible by adding :breadcrumb-show? false below the :inputs line.
For further learning can check the resources I have listed here:
As well as the resources link provided by mentaloid.
Unfortunately documentation is scattered, but not non-existent.
And for reference on difficulty, it took me ~3 months to become somewhat proficient in this language. So take your time.
May also want to check this topic:
I have some comments explaining each line in the first post.