I did a talk in [Cocoaheads Beijing](http://cocoaheadsbj.org) yesterday on the topic “Text Layout with Core Text”, and [here](http://jjgod.org/docs/slides/TextLayoutWithCoreText.pdf) is my slides (4 MB, pdf).
I may write a more detailed article on [Core Text](http://en.wikipedia.org/wiki/Core_Text) typesetting later, stay tuned.