I know that the question may be a little generic, but I do not want more than something to start with.
So far I've been using the volley library on Android with Java, but now, to do it with Kotlin I do not know if it's the best way to do it.
What is the best way I can follow? or Where can I start?
On the Kotlin website they offer two possibilities:
-Http Servlets: https://kotlinlang.org/docs/tutorials/httpservlets.html
-Spring Boot: https://kotlinlang.org/docs/tutorials/spring-boot-restful.html
I do not know if it's okay to use one of these two types or continue with the use of volleyball or another type of technology.
In principle, to start is to implement a user registry. Also if it is better for the task to use Firebase (or another method) or implement it myself (as I have done with volley + Java).