Jython Books
1. [http://www.oreilly.com/catalog/jythoness Jython Essentials]. Samuele Pedroni, Noel Rappin. O'Reilly and Associates. 2002.
2."Jython for Java Programmers." Robert Bill. New Riders. 2001.
3. [http://www.aw-bc.com/catalog/academic/product/0,1144,0201616165,00.html Python Programming with the Java Class Libraries: A Tutorial for Building Web and Enterprise Applications]. Richard Hightower. Addison-Wesley Publishing. 2002.
4. [http://vig.prenhall.com/catalog/academic/product/0,1144,0131176552,00.html An Introduction to Computing and Programming in Python: A Multimedia Approach]. Mark Guzdial. Prentice Hall. 2004.
Books 2 and 3 are available from Safari.
For a detailed list of books and articles look at:
[http://www.pycs.net/users/0000177/ Ed Taekama] has compiled a fine list: [http://www.pycs.net/users/0000177/stories/13.html Jython Bibliography]
[http://www.extreme.indiana.edu/~gannon/Building-web-services-for-jython.html Building an Application Web Service based on Jython Scripts]
Jython Tutorials
1. [http://www-128.ibm.com/developerworks/edu/j-dw-java-jython1-i.html First] and [http://www-128.ibm.com/developerworks/edu/j-dw-java-jython2-i.html second] part of a very good tutorial written by Barry Feigenbaum, IBM (download needs registration).
Other Resources
In the back of [http://www.oreilly.com/catalog/lpython/ Learning Python] is a very cool Jython graphing example.