Magic

•  Encyclopedia of Spells 
  Spells, charms, curses, and magical effects
  A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q -  R - S - T - U - V - W - X - Y - Z
•  Encyclopedia of Potions 
  Potions, ingredients, and other potion-related terms
  A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q  - R - S - T - U - V - W - X - Y - Z
•  Encyclopedia of Magical Items & Devices
  Various magical items 
  A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
•  Encyclopedia of Magical and Mundane Plants 
  Plants from the mundane to the fantastic
•  Magical Theory & Essays about Magic 
  "The Rules" of Rowling's magical world
•  Miscellaneous Magic 
  Vanishing magic, movement magic, Occlumency, etc.
•  History of Magic 
  Timeline of magical events
•  Fields of Magical Study 
  Hogwarts curriculum
•  Dark Arts 
  Unforgivables, items, creatures, etc.
•  Types of Magical Beings 
  Werewolves, vampires, giants, ogres, etc.
•  Types of Magical Creatures
  Kneazles, elves, pixies, etc.