Basically, what I'm saying is, I've been watching a Blender YouTube tutorial (or something like that), I saw that a lot of users had something at the bottom-left of their main 3D view that created a text output of their mouse and keyboard actions. Does anyone know how to enable that feature? Thanks!
This is an addon called Screencast keys. It is no longer distributed with the official releases due to some limitations, but you can install it yourself if you want:
download it and then click install from file in ⎈ Ctrl⎇ AltU> User preferences > Addons, then navigate to where you downloaded the python script.
Enable it, then turn it on in 3D view > Properties region (N) > Screen cast keys: