Its a story meant to push the author's own insane views on logic and rationality. It tries too hard to be funny while also using his retarded ideas on how people actually think.
The part where I stopped was when Harry decided that it would be a good, character building, idea to agree to have his entire 1st year DADA class (as run by cool professor Quirrel, who's idea this was) spit on him and denigrate him. Somehow this would make him stronger, rather then traumatized.
The story is complete and utter shit, and its basically the author masturbating over how awesome he thinks he is.