Best courses for app development IOS & Android

What are the best paid/free courses to learn app development for beginners from A-Z?
From uploading the app to keyword research to monetizing it
and shows all Pros and cons

Interested as well

I mean this is not like answer you wanted to get, but course does not matter just find something on youtube which shows basic of programming language and learn it. After you got a basics of language than you just need to practice and make different projects (with help of "google"). Uploading and other stuff is easy you can also find it on youtube.