Grasping the engine

“In order to use the engine, you need experience.”
“In order to acquire experience, you need to know how to use the engine”

Where to start under those pretenses?

I wouldn’t say that’s true. You can still use the engine even if you’re learning. You need to start off with a reasonably attainable goal and then start working on it and research and learn whatever you don’t know how to do when you come to those things.