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 ΓÇ£Art of Moving PointsΓÇ¥ 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 ΓÇ£Art of Moving PointsΓÇ¥ is also an excellent source for Character Modelers who are designing character facial meshes for production.  Character facial articulation is extremely challenging, and The ΓÇ£Art of Moving PointsΓÇ¥ 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!