Hi totally zero knowledge from beginning learning from the ground to build android apps which one should I go first :)

Answer 1

I see you are starting Java.

You are correct.

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

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Answer 2

So what you need are languages related to application programming. You need to learn the basics of Python, C++, and Ruby; then Java, C#, or Swift as add-ons based on the platform you're targeting.

My answer was based on the Sololearn's FAQ.
https://www.sololearn.com/faq

Thanks for your question and happy coding.