Guides and Books for Compositing

Hello Everybody.
Can anyone recommend me any book or dvd for advanced compositing in blender ?
I’m trying to use blender as a compositing software like after effects or nuke. But I can only find few tutorials or guides about this topic.
Isn’t there an official guide for this topic?
Thank you for your help!

Hi, you could check out some of the tutorials on my website, www.openvisualfx.com
I try to focus on real-world types of compositing examples, stuff that I’ve done during my career.
Like one of these, for example

Hope it’s a good starting point!