Of course. How else would he learn all of his subjects?
"Nox"
In the fourth book, Harry used the spell, Diffindo, to rip Cedric Diggory.
Digitalis is not a spell in Harry Potter.
luna lovegood uses this spell to fix harry's nose after draco malfoy breaks it. this was in the sixth book.
Yes, Harry Potter Spells app is available for iPhone and iPod Touch from the iTunes App store
No, in the epilogue of the final book he is married and has a child, Scorpius.
Accio (although he cast many spells throughout the book).
The spell diffindo splits seams and bindings (spine in a book, bottom of a bag)
It is unclear in the book, however, in the movies, it is: Vulnera Sanenteur
In the film and the book it is Serpensortia.
The correct spelling of his name is Dobby.Dobby is a house-elf who first appears in the second book, Harry Potter and the Chamber of Secrets.
The lastest (and last) Harry Potter book is Harry Potter and the Deathly Hallows. It was published in 2007.