This really isn't the place for help learning how to compile homebrew.Broken L button, I need a temporary solution.
Sorry to ask 2 noob questions, but which file will I need to edit and how do I compile it? (Compiling has been my weakness for eons, so I might as well learn.)
You will need devkitpro: https://sourceforge.net/projects/devkitpro/
Getting started: https://www.3dbrew.org/wiki/Setting_up_Development_Environment
A couple libraries as outlined in the CIAngel github readme (We use libctru and hbkb)
Experience with C/C++ programming and compiling.
If you require assistance beyond that, I'd recommend starting a new thread or asking in IRC.