Harry Potter and the Sorcerer's Stone by J.K. Rowling

In Harry Potter and the Sorcerer's Stone by J.K. Rowling, eleven year old Harry Potter doesn't know a lot about the night his parents died. His horrible aunt and uncle tell him they died in a car crash but somehow, that doesn't seem right. Harry of course, was only a one year old at the time, and can't remember much. But he does remember, when he strains his mind, a lot of green light. But he can't explain where the green light would come from. There is a lot of stuff Harry can't explain. Like how he can get away from Dudley, his massive bully of a cousin by finding himself suddenly on the school kitchens when all he was trying to do was hide from Dudley behind the dumpsters. Or how he made his hair grow back so quickly after his awful aunt shaved his head. But then one day a letter comes for him. A letter that seems to upset his uncle and aunt who take it from him before he can read it. What is it all about, and does the strangely tall man named Hagrid have to tell Harry when Hagrid shows up to talk to him about a strange place called Hogwarts?