How to start studying for the position of QA automator?

Question

Software testing

I was interviewed for the position of QA automator, they gave me such a list "TestNG, REST API, JSON + JSON Path, REST Assured, Jenkins". Where is the best place to start? I know about testing, but superficially, there is no practice of writing tests.

Answer 1

from all over
TestNG and Jenkins are tools, the rest is theory