Question Switch Homebrew Development Documentation?

I apologize if this post is breaking any rules/goes against guidelines, first time posting.

Anyway, I'm a novice coder that really only has experience creating terminal applications with C. Some of these applications go over ~1000 lines, if that is any indication of my current proficiency

I've set up a simple development environment with devkit, yuzu, Msys2, and the like and have been able to run simple printf applications on my switch using ftpd to transfer the nro to the sd card without removing it, re-exploiting, and the like.

However, I'm kinda stuck in terms of how to go forward. There's a lot of needed functions like

gfxInitDefault();
consoleInit(NULL);
gfxFlushBuffers();
gfxSwapBuffers();
gfxWaitForVsync();

that I can intuitively guess the purpose of, but I'd rather have full written explenations so I know I'm using them correctly.

Really I just want documentation/information on the capabilities and limitations of what I can do now. For example, can I use ncurses.h to create ui? or is there a better method? What about actual graphics, sounds, images, and videos?

Can anyone give me a basic rundown or point me in the right direction? Thanks