How do I start Hacking and Web Pentesting?

I'm 16 years old, and I really love computers, I know basic Java, HTML, and now I'm learning javascript, and after it I will learn sql and php, My question is how can I start Hacking, all the people a asked told me to learn about networks, so: where to learn, and how much time will it take? , Thanks for everyone, if someone wants to replay this on my instagram: orhaifler_ , telegram, my name is Aa Ss. Thanks!