I know you asked for books but there are some great video tuts out there too.

http://www.blendercookie.com/

 Even if you don'nt use silo there are really good vids on there site.

http://www.nevercenter.com/silo/videos/tutorials/

And of course there is always youtube.

 

 

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"The true sign of intelligence is not knowledge but imagination".

Albert Einstein