How can i add a navigation drawer to an existing application?

I'm new to making apps and I'm working on this college project which I need help with, I want to create a navigation drawer for my application but I don't know how to, I have already created login, register, edit profile and main page to my app but now I want to add a navigation drawer to it without making a whole new project, for example I want the main page to have that drawer and it will contain 'edit profile" etc. so I can go to different activities from it, I've seen a lot of videos but don't really understand yet since they all make new projects, how can I link all of my activities to it without needing to create a new project?