Netrw is a built-in file manager in Vim (if we want to get technical, it's a plugin that ships with Vim). It allows you to browse directories and functions, similar to any other file manager you've worked with in your favorite OS.
Use :Ex (the full command is :Explore) to open the file navigation window:
Here, you can see all of the files within our workspace. Netrw already provides a quick help section in a status bar, but ...