Everyone wants a course or cert or mentor that will teach them how to be master hacker or to hit the ground running with a cheatsheet in hand. But the only real path requires two legs: practice and curiosity (self-study to learn the things that are still unknown). A course can help with the former, but courses can only cover a miniscule amount of all the unknown things you’ll run into. Dive in, get guidance as needed, but there is no substitute for practice and doing something by yourself. Apply for and land a job, find a mentor there, or find yourself being the mentor. Do, do, do.
That said, just ask direct questions.