In rough chronological order. I'm also probably forgetting some.
  1. Captain Underpants
  2. Wayside School
  3. Redwall
  4. Ender's Game
    I read the series that followed Ender for a bit but it got too weird for me. The series that followed Bean was much more more my speed.
  5. Animorphs
  6. Lord of the Rings/The Hobbit
  7. Left Behind
    I swear I was just reading these as some far out sci-fi.
  8. The Majipoor Cycle
  9. The Adventures of Vlad Taltos
  10. Harry Potter
  11. Dune
  12. Foundation