Might as well make a post here since...there's nothing. This will be a nest guide as requested by aj. What this really is though is a bunch of links for you to click to another site to read.
Manticore Nest:
http://dn.mmosite.com/news/12182011/dragon_nest_manticore_nest_guide.shtml
Apocalypse Nest:
http://dragonnestblog.com/2011/12/10/apocalypse-nest-guide/
Apoc hell guide:
https://www.youtube.com/watch?feature=player_embedded&v=gixfkWkbiLM
Dodging bolty's death hug:
https://www.youtube.com/watch?v=JWJOmMeZ0oo&feature=player_embedded#!
Sea Dragon Nest:
http://forum.mmosite.com/thread/2/217/20110314/Sea_Dragon_Nest_Guide_V13-4dac3760152fdf413-1.html
sea dragon nest boss
https://www.youtube.com/watch?v=jmvOn0fGDSQ
Archbishop Nest:
http://forum.mmosite.com/thread/2/217/20110705/Guide_to_Bishop_Nest_Normal-4e136048579870313-1.html
Green Dragon Nest:
Green dragon part: http://dn.mmosite.com/news/12262011/green_dragon_nest_guide_for_stage_6_green_dragon_1.shtml
Other parts are in the guide in video mode.
https://www.youtube.com/watch?v=5Tf9gliVsWI
green dragon nest-failed
https://www.youtube.com/watch?v=eDiNYAzzEjU
green dragon nest-won
If you guys want to add or you've found some good informative videos on each of their attacks then add them here. If you want the other nests too i.e. cerberus/minotaur, then ask or find them yourself.