W3 Schools mayne the only place you really need to go to for references to all things web development and beyond. It covers tutorials into full stack development as well as a range of languages and technologies

Roadmaps is a different kind of tool, it is contains maps of skills and technologies you will need to fulfill a rols e.g. front end web developer, data scientist, etx. Great for if you want to get skilled up but not sure where to start.