These resources are starting points to explore XP further. The best way to understand it is to do it. The second best way is to learn from people who are doing it successfully.
Ward Cunningham’s Wiki at http://c2.com/cgi/wiki is the best place to explore XP as it evolves. It’s populated by thoughtful, intelligent people with tremendous wisdom. If you’ve never used a Wiki before, lurk for a while. The community standards and evolutionary process resemble XP in many important ways.
The JUnit home page (http://junit.org/) hosts the canonical unit-testing framework for Java, originally written by Kent Beck and Erich Gamma, and ported to several other languages. (See http://www.xprogramming.com/software.htm for these other frameworks.) The JUnit site also has links to several useful testing articles.
Ward Cunningham has created another testing framework called FIT, which can be found at http://fit.c2.com/. FIT allows data-driven testing and makes tests very easy to write, especially for customers.
The Extreme Programming mailing list (http://groups.yahoo.com/group/extremeprogramming/) is a high-quality mailing list devoted ...