Answer 1

APPS : Inkscape (open source), Adobe Illustrator (paid)

And for animating vector graphics both for android and web apps : https://shapeshifter.design/ website is awesome.

Video tutorial: https://m.youtube.com/watch?v=dzB-1VlHJW8.

Answer 2

Here is hindi tutorial
https://youtu.be/7zVanhJDtUI

And if you want to learn vector graphics for android than this is best website for you

https://developer.android.com/guide/topics/graphics/vector-drawable-resources