Hello. I started working on an ASP.NET MVC and Web API project at work. I'm still an intern. So I'm still learning. I look at the code and I'm finding it hard to understand what's going on in there. It's a 5-year-old project, so there's a lot of code in there and I don't have a strong understanding of the design patterns used.

Are there any projects(on GitHub or anywhere on the internet) that helped you better understand while you were learning?

Or even some tutorials you found very useful for working on projects that you didn't find in most other tutorials or videos?