Learning Android Development?

Question

Android

Good evening, I decided to study the development for Android. Created this topic, because. Most of the questions on the site on this topic were published conditionally a long time ago (more than a year ago).
Briefly about myself: freelancing for half a year (I wrote a couple of small sites) HTML, CSS, sometimes js. I also took a Java course at CodeAcademy.
From good courses on android (at my discretion) I found:
https://classroom.udacity.com/courses/ud851
startandroid.ru/ru or www.fandroid.info (as far as I understand, this is almost the same resource)
I want ask you for study recommendations. Everything is fine with English, i.e. I can take training on it
Thank you in advance!

Answer 1

https://developer.android.com/training/index.html#...

Answer 2

Complete and up-to-date practical Android developer guides (very clear and to the point)
guides.codepath.com/android
One of the best books (see new edition)
www.amazon.com/Android-Programming-Nerd-Ranch-Guid ...

Answer 3

The Busy Coder's Guide to Android Development

Answer 4

https://www.udacity.com/courses/android
Video tutorials (in English)

Answer 5

I can recommend a good course in Russian and in the modern programming language Kotlin for Android androidschool.ru/courses/android-retrofit-and-gson In addition to this course, there are a few more mini-courses that will help you step by step to understand how to build Android applications.
androidschool.ru/courses/room-and-view-model