Thanks for the positive feedback, in makes me even more proud.
I learned the hard way to comment code when I studied. A professor told me to comment the some code two weeks after I wrote it. It took me four times the time to comment it than to write the code.
The light resistor is connected to 5v and pin 3 and. And there is a 4 Mohm something resistor connected to pin 3 and ground. So if the light resistor sees darkness pin 3 is connected to ground and if it sees light pin 3 is connected to 5v. That vay i can read changes from LOW to HIGH on pin 3.