After completing my html and css which course i have to start

Answer 1

Hi Friend, I recomend you start tô learning Javascript, because this language you are use to manipulate data in the client side and, with Node.js a framework to Javascript, you Will manipulate data in the Server side. So start learning algorithm with Javascript.

Answer 2

My suggestion,
For Web Development,
1. Html
2. CSS
3. JavaScript
4. PHP
5. MySQL

Those are the step to learn the course properly

Good Luck~