Update to the old thread.   I haven't included all threads (many are earlier versions of current ones) but this should cover the most useful.  I'll try to keep it as up to date as I can, as and when threads are added or updated.

LONG-TERM CHALLENGES

Chicks:

! ~ GUIDE TO THE CHICKS ~ !
https://www.fairylandgame.com/fbfairy/forums.php?tid=34384

Butterflies:

Requirements for Butterfly levels - updated January/2012 after the Change =)
https://www.fairylandgame.com/fbfairy/forums.php?tid=9355

Fairytales:

FAQ: The Three Little Pigs
https://www.fairylandgame.com/fbfairy/forums.php?tid=55854

FAQ: The Three Bears
https://www.fairylandgame.com/fbfairy/forums.php?tid=60185

FAQ: The Frog Prince
https://www.fairylandgame.com/fbfairy/forums.php?tid=63557

FAQ: The Ugly Duckling
https://www.fairylandgame.com/fbfairy/forums.php?tid=67933

FAQ: Jack and the Beanstalk
https://www.fairylandgame.com/fbfairy/forums.php?tid=71350

FAQ: Three Billy Goats Gruff
https://www.fairylandgame.com/fbfairy/forums.php?tid=74066

FAQ: Snow White
https://www.fairylandgame.com/fbfairy/forums.php?tid=76672

Pond:

Fishy Namesakes (spoiler)
https://www.fairylandgame.com/fbfairy/forums.php?tid=127203

Basic strategy for Bottom Dwellers
https://www.fairylandgame.com/fbfairy/forums.php?tid=120291

FROGS step by step instructions
https://www.fairylandgame.com/fbfairy/forums.php?tid=143572

Topiary:

Complete Topiary step by step instructions
https://www.fairylandgame.com/fbfairy/forums.php?tid=116313

Another spoiler alert! (Topiary calculator information)
https://www.fairylandgame.com/fbfairy/forums.php?tid=131843

SEASONAL CHALLENGES

Bee challenge - step by step instructions
https://www.fairylandgame.com/fbfairy/forums.php?tid=116959

A brief guide to the Black and Brown Bears
https://www.fairylandgame.com/fbfairy/forums.php?tid=121241

Short Guide to the Venus Flytrap and Flies (updated 23/10/17)
https://www.fairylandgame.com/fbfairy/forums.php?tid=143758

Short Guide to the Scarecrows and Witches (updated 17/10/13)
https://www.fairylandgame.com/fbfairy/forums.php?tid=85017

Short guide to completing the Festive Trees and Snowmen
https://www.fairylandgame.com/fbfairy/forums.php?tid=123807

OTHER WILDLIFE

Instructions for Bamboo-eating wildlife - Giant Panda, Red Panda, Gorilla (updated 23/10/17)
https://www.fairylandgame.com/fbfairy/forums.php?tid=143754

Chameleons - step by step instructions
https://www.fairylandgame.com/fbfairy/forums.php?tid=140825

OTHER GUIDES

Fairyland Guide by ღ Ʈɨǵεя ɭiℓy ღ 13/02/2016
https://www.fairylandgame.com/fbfairy/forums.php?tid=127499

FAIRYLAND LEVELS AND REWARDS and more updated 30/01/17
https://www.fairylandgame.com/fbfairy/forums.php?tid=137351

NEW Self Gifting Method For Seasonal/Limited Editions
https://www.fairylandgame.com/fbfairy/forums.php?tid=127816

Wildlife calculator
https://www.fairylandgame.com/fbfairy/forums.php?tid=85907

Another spoiler alert! (Topiary calculator information)
https://www.fairylandgame.com/fbfairy/forums.php?tid=131843

List of seeds, birthstones, parts for building challenges & which critters provide them
https://www.fairylandgame.com/fbfairy/forums.php?tid=120729

Properties of the Green House
https://www.fairylandgame.com/fbfairy/forums.php?tid=121984

List of common Fairyland abbreviations and slang terms:
https://www.fairylandgame.com/fbfairy/forums.php?tid=140551