Well Im pretty much attacking this kit I bought lol. I am kind of just plugging things in and hoping it does something honestly. I just shoved a IR sensor (VS1838B) on my board ran the 5v line to it and a 220 ohm resistor (only because I saw someone use that for an LED on a tutorial lol. No clue what I am really doing).
So I am just reading the input. Curiously just being on gives the value 123-127. While holding down any button on the remote I am using you get 13.
I assumed that maybe the sensor becomes more resistant when IR light is present and that 125ish is what ambient light does to it. I decided to take out the resistor to someone test that theory (yes I know that's bad) oddly I still got 125 and 13 on a button press.
So I have more experimenting to do I guess.

int ir = A0;
int data = 0;
void setup() {
Serial.begin(9600);
}
void loop() {
data = analogRead(ir);
if (data != 125) {
Serial.println(data);
}
else {}
delay(100);
}