http://www.dakkadakka.com/dakkaforum/posts/list/429131.page Excellent tutorial on converting Deff Koptas to Trukks or Buggies.
http://www.dakkadakka.com/dakkaforum/posts/list/428337.page Tutorial on how to make "hatches."
http://www.dakkadakka.com/dakkaforum/posts/list/427960.page Tutorial on how to make MOE DAKKA!
The above tutorials are credited to Wazzoo2000

http://www.dakkadakka.com/dakkaforum/posts/list/407768.pageBasing tutorial, good for Tyranids or Chaos.
http://www.dakkadakka.com/dakkaforum/posts/list/431837.pageGreen Stuff Tutorial with video.
http://www.dakkadakka.com/dakkaforum/posts/list/242444.pageMake AoBR boys a little betta'.
http://www.dakkadakka.com/dakkaforum/posts/list/456818.page Mysetic Spore tutorial

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http://www.evergreenscalemodels.com - Plasticard!