After html and css

what should I learn after finishing html and css course.
i am learning javascript

I started with HTML and CSS and gradually learned everything on Codecademy.

JavaScript is good and next I would recommend PHP

Take the Make a Website course, if you can do that after the html/css course then you should continue, if you find yourself getting stuck while doing this, you should go back and get comfortable with html/css. After that php, jquery, sql. Are all things that can relate to making a website.

That depends, what is your goal? What do you want to make?