Spells
Here are the various spells used throughout the Harry Potter Series. The number next to it is the book the spell was first introduced.

Wingardium Leviosa: Makes stuff fly (1)
Alohomora: Unlocks things (1)
Petrificus Totalus: Full Body Bind (Can't move anything, but your eyes) (1)
Locomotor Mortis: Leg Locker Curse (Can't move legs) (1)
Expelliarmus: Disarm someone (2)
Lumos: Makes light at the end of a wand (flashlight) (2)
Aparecium: Makes invisible ink readable (2)
Serpensortia: Makes a snake come (2)
Tanrantallegra: Makes your legs dance uncontrollably (2)
Finite incantatem: Ends all spells (2)
Rictusempra: Tickling Charm (2)
Obliviate: Memory Charm (removes a person's memory) (2)
Nox: Turns the wand's light off (3)
Dissendium: Opens one-eyed witch's hump (Okay, not a real spell, but it is italizied. :-) (3)
Ferula: Makes a splint (3)
Impervius: Repels water (3)
Expecto patronum: Creates a Patronus, which protects from Demontors (3)
Mobiliarbus: Makes something rise, move, and then fall (3)
Mobilicorpus: Moves a body as if it's a puppet (perhaps ties invisible strings to it) (3)
Riddikulus: makes a boggart become a humorous thing (3)
Waddiwasi: Removes gum from objects????? (3)
Incendio: Starts a fire (4)
Accio: Summoning Charm ~ brings desired object to you (4)
Morsmode: Brings forth the Dark Mark (4)
Stupedfy: Stunning Charm (4)
Reparo: Repairs broken objects (4)
Engorgio: Makes object bigger (4)
Reducio: Makes smaller / normal size (4)
Furnunclus: Gives victim boils (4)
Densaugeo: Makes front teeth grow (4)
Avis: Sends out birds (4)
Orchideous: Makes a bouquet of flowers (4)
Diffindo: Splits seams (4)
Sonorus: Raises voice (microphone) (4)
Enneverate: Ends Stunning Charm (4)
Point Me: Makes wand a compass (4)
Impendimenta: Impeniment Curse ~ Freezes victim (4)
Priori Incantatem: Reverse Spell Effect ~ shows last spells used on a wand (4)

The Unforgivable Curses (4)
Use of these spells gives a life sentence in Azkaban
Imperio: The Imperius Curse ~ One wizard has complete control over his victim
Crucio: The Cruciatus Curse ~ Causes victim intense pain and suffering; he twitches and rolls in agony
Avada Kedarva: The Killing Curse ~ Kills victim instantly, leaving no marks at all on the body (That's how Voldemort killed his victims)

This is the spell that was used to return Voldemort to his body:
"Bone of the father, unknowingly given, you will renew your son!
Flesh of the servant, willingly given, you will revive your master.
Blood of the enemy, forcibly taken, you will resurrect your foe."