Why don't you use the forum search? You can find this thread https://www.b4x.com/android/forum/threads/create-a-wrapper-library-with-android-studio.82831/ which gives you step by step instructions how to do it. It works, because I tried it. You don't need any videos for it.
1. Be more specific. Post the errors you encounter.but getting lots of errors due to some compability issues of AS
I´ll not do anything.
!!! LEARN JAVA first.You need to know some Java, sometimes only the basic, other times more advanced Java. That is a prerequisite.