Routing Tools for GXDA

Booster FAQ (includes contents and how to unlock each pack):
http://www.gamefaqs.com/gba/928593-yu-gi-oh-gx-duel-academy/faqs/41185

http://yugioh.wikia.com/wiki/Basic_1-A_(GX1-BP)
(scroll to the bottom to see all packs)

Timed Duel Instructions (useful for the exams, especially dorm switching):
http://yugioh.wikia.com/wiki/Yu-Gi-Oh!_GX_Duel_Academy/Timed_Duel_List

Event FAQ (incredibly useful for King of Games category):
http://yugioh.wikia.com/wiki/Yu-Gi-Oh!_GX_Duel_Academy/Events
I don't think it covers everything, but it's still quite useful

Written Test Answers (Great for
http://www.gamefaqs.com/gba/928593-yu-gi-oh-gx-duel-academy/faqs/41370
May not have every question, but is still being updated.
http://pastebin.com/SHBjPbrA (Simplified Version)

Every Duelist's Deck (Good for strategy and routing All Duelists, or King of Games)
http://www.gamefaqs.com/gba/928593-yu-gi-oh-gx-duel-academy/faqs/41382