This is how you can proceed in learning web development:

• Start with Html and Css
• If you want to be a good web developer (talking about frontend), you should have a good grasp of the above two. Also you need to have good knowledge of html and css even if you want to excel in Backend only
• Then take up JavaScript. Js requires patience, and you need to be good at it. And what I believe is, you should be able to google your doubts in a good way while developing something. Even good developers google the most basic concepts.
• Then if you want to be an expert in frontend, try React or Angular, they both are good frameworks or say, libraries for front end development.
• Now if you want to do full stack or specialise in Backend, go with Nodejs, because you would have learnt enough JavaScript by now, and switiching to a different language such as PHP for backend would not be a good choice. Learn Nodejs, Expressjs.
• And you need to have knowledge of database such as MongoDb, PostgreSql or Mysql… I would recommend MongoDb because it is quite easy… I've worked with MySql also but didn't use it in a project having a backend.
• But this is the key point. Start making projects… learn by making projects. Making small small projects while learning things is the key to excel in any field. You finish html, css, make a project, you learn js, make a project, learnt backend stuff… make a project. Make a project while in the learning phase and make a project after you have completed.

Hope it helps