How to make a good doorway?

Question

Marketing

Hello! Are there any good services or books (or another option) for creating doorways online?! There is something, could you write them, be it a service, a website, a book or something else. Thank you in advance!

Answer 1

It is kept in the strictest confidence by those who succeed. All books, literature on this topic are already proven technologies that have stopped working (which is why they were posted in public).