I’m a junior engineer and my manager recommended this book. A lot of it flew over my head but now I can sit in meetings and kind of following along with what’s going on. It’s a dense book and I’m glad I read it!
I would also go for books, but if OPs here asking for courses they probably know they learn better that way/prefer it.
Seconded - this book is fantastic. I wish I'd read it much earlier in my career.
There's an audiobook too, if that's your style.
An audiobook is hardly an appropriate format for this kind of content. It is even worse for this book in particular since it contains a lot of figures and tables. YMMV.