Just read the details and you find your perfect answer here.
Don’t west your time thinking about it. It is an interesting language and growing at this time.
If you want to know about Creating JSON File.
In any IT company, they do not give much time to learn any new technology. They Just give 2 – 4 days for reading and then work is started.
All About Practices that will good you in any technologies that you want to learn.
It will take approx 1 to 2 days with basic knowledge.