which curriculum to take for introduction to computer science?
If you are looking for an actual introduction to computer science then I think one of the most popular is the Harvard University CS50: Introduction to Computer Science course. It’s completely free and you get to say you attended an Ivy League school
If you are looking to become a web developer then FCC is the place to be and you should start with the first certificate, Responsive Web Design, and then continue from there.
In case you are talking about the Learn to Code RPG: Learn to Code RPG – A Visual Novel Video Game Where you Learn Computer Science Concepts