Two-time VES award winning Character Technical Director Brian Tindall has just released his iBook"The Art of Moving Points" for facial modeling and articulation, is now up on iTunes.

The “Art of Moving Points” is designed for the intermediate to advanced Character Rigger or Character Modeler that wants to learn a different approach to character facial articulation using point weight containers, and assigning them to deformers to move points in space.  The “Art of Moving Points” is also an excellent source for Character Modelers who are designing character facial meshes for production.  Character facial articulation is extremely challenging, and The “Art of Moving Points” breaks down the modeling and articulation process using three formats: text, illustrations and videos.
 
https://itunes.apple.com/us/book/the-art-of-moving-points/id639498241?mt=11 
http://blogs.indiewire.com/animationscoop/ebook-review-the-art-of-moving-points

modo rocks!