Yes. Here are the Horcruxes he found or made contact with.
1: Tom Riddle's Diary
2: The Gaunts' Ring
3: Slytherin's locket
4: Ravenclaw's Diadem
5: Hufflepuff's Cup
6: Harry Potter himself
7: Voldemort's Snake (Nagini)
It depends what Horcrux your talking about, they do find them all and destroy them all though.
No she didnt....Dumbledore tells Harry that he is a Horcrux
No, Harry dies, but comes back to life because it turns out that he is a horcrux.
No, he didn't die because he was Horcrux. Had he not been a Horcrux the killing curse would have killed Harry, instead of just the Horcrux.
He stabs the Horcrux right after they find Gryffindor's sword in the frozen pool.
I guess you mean "Voldemort"? That's because Voldemort tried to kill Harry, but when he did, he actually made a Horcrux. Harry is the horcrux, but he is Harry as well. The Horcrux inside Harry gets killed in the last book.
Yes, the horcrux inside of Harry Potter
No, but the diary Horcrux, was destroyed.
Marvolo Gaunt did, he hid it inside a ring which Voldemort made into a Horcrux. When Dumbledore destroyed the Horcrux he found the ring and hid it inside the first snitch Harry ever caught. Harry dropped it in the Forbidden Forest and never went back for it.
The diary
The Ring
yes