Oracle of Ages

Game Boy Codes
Cheats and codes.
http://www.allconsoles.com/gameboy/games/thelegendofzelda.shtml

Game Revolution
Cheats, codes, hints, or help from Game Revolution.
http://www.gamerevolution.com/oldsite/games/codes/gameboy/legend_of_zelda_oracle_ages.htm

Game Winners
Contains cheats, codes and hints.
http://www.gamewinners.com/game_boy_color/LegendOfZeldaOracleOfAges.htm

GameFAQs
Contains links to pages with guides and FAQs.
http://www.gamefaqs.com/portable/gbcolor/game/472313.html

GameSpot
Links to game news and preview.
http://www.gamespot.com/gbc/adventure/legendofzeldaoracleofages/

Ganons Tower
Walkthrough, story, art, review, rings, bosses, maps and items.
http://www.ganonstower.com/zelda8.shtml

Hylian Help Desk
Box art, fan art, and FAQs.
http://hylianhd.rpgplanet.gamespy.com/z_8.php

IGN
Game information, news, and preview.
http://pocket.ign.com/objects/016/016041.html

Teamanti
Full walkthrough
http://www.teamanti.com/ages.htm

Zelda.com
Contains frequently asked questions, parental information, and system information. [Requires Flash 4, available for download].
http://www.zelda.com/ages/