What literature to learn Swift and what do you need to study in order to become an iOS developer?

Question

iOS

What is the best literature to learn Swift?
What languages ​​/ technologies should be studied in a complex in order to become an iOS developer?
Has anyone tried online education at online universities for these professions? I don’t really trust, I’ll listen to real reviews, if any.

Answer 1

The girl took a swift course in English
iOS 13 & Swift 5 - The Complete iOS App Development Bootcamp, it gives more knowledge than some offline courses, and it is one of the most popular