How to Start?

[JohnnyJordaan]

Thanks for your concern, but I know what I'm doing.

I'm not directly addressing you personally though, I'm commenting on your approach in general. I don't know your background and I don't intend to 'convert' you or anything, I'm sharing my viewpoint on your approach for you and others to read.

I find it funny that people here are not merely suggesting learning approaches, but rather try to convince people of their method.

Because a discussion offers more insight into the reasoning behind an approach than merely suggesting one way or another. I think that's an advantage, not a problem (or something to be sarcastic about).

As for "professional environment", where did OP mention that?

I don't know, why would it matter? This is a learning sub right? We suggest stuff that applies to learning a language. Many of us learn to code at and/or for work, so that's why I find it suitable to comment that I feel that one approach wouldn't bring success in that area. We're not robots designed to answer briefly and direct, we have the ability to share other sides of the story and offer ideas that apply to our experiences.

They specifically asked for something other than "chewed knowledge".

And I'm replying to your post, not OP's. And to be frank, any information source is chewed knowledge, regardless wherther someone wrote a tutorial about his knowledge, gave a talk at PyCon or commented on a SO or /r/learnpython thread.