I just joined. Where should I start in order to learn how to write a personal accounting app for android?

Answer 1

If you plan on using Android Studio to make your app, Java would be your best first choice.

Answer 2

And seeing that you joined recently, I'd suggest going through the FAQ at first :)

https://www.sololearn.com/faq

Answer 3

if you want to have a thorough base, start with c or cpp and then study java

if you just need to build apps, start with java

Answer 4

this not the platform you searching for