If you want to become a web developer there are many skills you must master. 20 years ago it was just fine if you could create a website in html. Today there are many things you need to know. You can still create a site only in html, (and you should if you just starting) but to make awesome web apps you will need to learn a lot of stuff. Don’t worry, it doesn’t take years to learn the basics and with time you will get more experienced and it will be fun to code.