I have posted before trying to unearth more information on the subject but I think I need to take a step back even farther.

So I guess my next question to those who regularly dabble within IDA pro and assemble their own functions would be, where can I learn more about it? What assembly language are these functions written in?

I need to pinpoint where would be best for me to start reading into to make the information I have collected and somewhat comprehended make a little more sense.

TIA

Correct, its the same as you cant learn a language in 2 days.
Rudimentary takes you a few weeks or months, mastery of that language can take you years and more.

Maybe for someone who has knowledge of the fundamentals,
if you dont know hex, understand how a cpu is supposed to work, what interrupts are and how on earth special registers work it might be a lot harder.
Whats an eeprom, how is it interfaced, how does a flash work (how does one enable writemode on flashes etc etc). Why are most digital inputs configured as LOW = true and so on and on and on.

But well, in the end it all depends on how deep you want to dig.

None of this is even remotely translatable to you unless you have at least some background on how a CPU works.

IDA demo does not support other CPUs than x86 x64 iirc.