IR Learner? Need ideas

[Megahertz]

I Think that if he used a IR module, then just go work if TRISA.1 = 1, as input!

Pimentel

That could be fine if I just want to copy and replicate the code. But I am in a process to understand it fully. Making it input will settle question number 1 in my post above, but still looking for explanation on 2 & 3.