A complete reference guide - the API documentation - is available, which can be built locally using the gendocs.py script, in the pyjamas distribution.
There are also HOWTO Guides at the Pyjamas Wiki. These HOWTOs are written by users, for users, and will guide you through the process of setting up and using Pyjamas, including with your preferred web server framework (Django, Pylons, Web.py etc.)
An online version of the Pyjamas Book is available to read, and is in development. Contact lkcl@lkcl.net if there are any issues that you believe should be covered; if you find any errors; or if the book proves useful enough to be worth paying for. The Bookreader itself is a Pyjamas application which uses AJAX to load the contents as text files, and Wiki-like markup is used, on the browser, to generate the HTML displayed.