What are the courses to take to become a web designer?

You really need to learn html. It is really easy and you can learn it in a week. html5 syntaxs are understandable and self-explanatory.
The second thing you need to learn is CSS (Cascading Style Sheet). You can also style html inside the html tags. But not really reliable. You will know when you learn.
JavaScript is a programming language not a markup language like html and css. It is executed on browser. It is used mostly for animation and browser games.
After you have learned above three, you can create your own web pages static or dynamic.If you don’t have any idea on how to create a beautiful web pages, just google it and use others’ ideas. After that you will get idea. To create your idea, you need to draw it specific.Photoshop is the best for web template drawing. You can crop and manage photos. You can manage everything. And from that, you can get every padding and margin length that is useful for CSS styling and also the coloir codes.
If you become professional in CSS and JavaScript, you will want to learn Bootstrap framework. Frameworks are like libraries in programming languages. You just need to use the key features to get really cool management. But it should be used only for big web sites that contain lots of web pages.You shouldn’t use it for only a button or link. It can make web slower than that it should be.