Just a quick post to guide you towards a great blog/site/forum run by a friend of mine - James Craig. James is not only a great guy, but an excellent modeler and painter, so I urge you to head to his blog, Lost in the Warp, and dig through the archive of excellent material...oh, and enter his competition!
PS. Why the use of the Nagash pic? He certainly grabs some attention, doesn't he? That, and James used the pic too ; )