How should I start web development?

I am a junior Electrical Engineering major. I have taken OOP, Data Structures and Algorithms courses. Some projects I made included Hotel Management Program, Multi-player Chess game, and some Algorithm related programs. All of them were successfully implemented on a IDE; and I loved them. I really enjoyed programming, debugging and logic-making.

Now, I have been assigned by my instructor to work independently on a web project. I have to use MEAN stack. The problem is I don't know anything about web development. It will be my first time to make a stand alone application. After doing programming without any framework(C++), it is hard for me to work with and remember frameworks. I have been surfing internet and watching Youtube tutorials but it isn't making much sense. I don't just want to just make this app, I want to understand the basic design so that I know what I need to use and debug on my own to find the errors, just like those other projects that I worked on, in the school.

How should I proceed (kindly tell step-by-step approach), any resources would be appreciated?