If you want to become a web developer let me list a few things for you. That how and where to start.
First Step: Learn front-end technologies (Client Side)
First, you have to learn HTML (Hyper Text Markup Language).HTML is the building block of web pages.It’s a Markup language where you can make the structure of your webpage.
Second, you have to learn CSS (Cascading Style Sheet). CSS is the part of designing with the help of which you can design and add attraction to your web pages.
The second step is to learn Server Side Languages.
You can choose one of them according to your choice (PHP, Python, Ruby on Rails) etc.
Learn one of the above
And last but not least you have to learn MYSQL (data storage) which is often called SQL (Structured Query Language)
Becuase you need a space to store your web related data like images, content like blog data so for that you need MYSQL.
Following are the resources
Please comment below if there is any Questions or suggestions.