Yes.
Harry goes to Voldemort because after viewing memories of Dumbledore and Severus, he finds out Dumbledore planned for him to die, and for Voldemort to kill him.
Once Voldemort kills Harry, Harry is given the choice to die or come back and fight. Harry decides to go back and fight, which seems as though he died and then came to life.
Nobody can come back to life if they die, not even in Harry Potter. His parents, Sirius and Remus sort of come back but they aren't fully alive.
No, they do make a reappearance of sorts, but they are not resurrected.
No.
Nobody can come back to life really. We see a few characters again but none of them are alive. Dumbledore talks to Harry as does his parents, Sirius and Remus.
By summoning a magical fairy unicorn with Harry Potter on its back.
In Harry Potter, once you have died you cannot be brought back to life. Sirius did reappear when Harry used the Resurrection Stone but only as a spirit who disappeared when Harry dropped the Stone.
He soesn't really come back to life in either. However, in Harry Potter and the Deathly Hallows Part 2, when Voldermort uses the Avada Kedavra spell on Harry, he sees Dumbledore in a dream
There won't be an eighth book. J.K. Rowling has stated that Harry's story ends with Harry Potter and the Deathly Hallows.It is also not possible to bring somebody back from the dead in Harry Potter.
No he didn't. Characters in Harry Potter cannot return to life once they are dead.
No Dumbledore does not come back to life but he is mentioned in the deathly hallows
He comes "back to life" in book 4 (Harry Potter and the Goblet of Fire)
Harry Potter but he came back to life.