Career change option.

Guys, need help.
Currently I’m working on Pyspark but doesn’t code, just testing a built code. I was from Web Development(PHP) background before this and I loved it. I am looking to search job again based on web development (Java). I am very good in Java.
Need help as to where should I start from? And what are the things I need to prepare?

原文链接：Career change option.