Customizion outside of Views folder

I’m trying to use Namaste! for my site, but we use a custom made theme built on boostrap. I’ve began customizing things as described in the “Advanced” section of the help page, however there are things I need to customize that are not inside of a file in “Views”.

For example, the Enroll button on the My Courses page needs to be edited, and so does the text that appears when a prerequisite is not meant. Additionally, when you hit “Mark Complete” the button turns to “Lesson Completed” text. I need to apply a label to that.

There are several things like this I need to customize that aren’t available in Views, so any help is appreciated! Thanks!