How i will become professional andriod developer expert still i have learn Android developement course by google in past 2months

Question

Java

Answer 1

https://www.sololearn.com/discuss/823823/?ref=app

//Resources

External sources :
https://techbeacon.com/app-dev-testing/how-become-better-android-developer-30-bite-sized-pro-tips

https://developer.android.com/

Answer 2

Bro that external resource was the best, thanks alot