suggest me any video tutorials on Android app development that should cover from the basics

Answer 1

Look at thenewboston.com

Answer 2

you can also read

https://developer.android.com/training/basics/firstapp/index.html

Answer 3

look at Udemy.com or Udacity.com. There should be some courses about Android where you don't have to pay(There are also a lot of courses which are with money)