I think this will be helpful for beginners.

yaha79373

This is a course that allows you to easily follow the process required for mobile app development, from the basics of Android development to store registration.

alec

Easy-to-follow Android app development

입문

초급

중급이상

안드로이드

Android

1. Before starting development

2. Start development

3. Basic knowledge for development

4. Start app development

5. Development in conjunction with the server

6. Connecting ads (Admob)

7. Registering the app on the Play Store

8. Increase app downloads