Open a terminal and cd to the directory you unarchived:
cd <the directory you just unarchived>
Within it you'll find:
koans: this directory contains the application and its lessons, it is all that is needed to advance through the koans themselves and it can be distributed independently
lib/koans-lib: the directory for source code for the engine that executes the koans
lib/koans-tests: the directory for tests to check the sanity of the application
lib/file-compiler: the dynamic compiler module that loads newly saved java files into the JVM as classes
lib/file-monitor: the file monitoring module for notifying the app when files are saved
lib/util: application agnostic interfaces and utilities shared in projects
Change directory to the koans directory: cd koans
If you are using windows enter: run.bat or ./run.sh if you are using Mac or Linux.
Developing a Koan:
Follow any of the existing koans as an example to create a new class with koan methods (indicated by the @Koan annotation, they're public and specify no arguments)
Define the order the koan suite (if it's new) will run in the koans/app/config/PathToEnlightenment.xml file
Optionally you may use dynamic content in your lesson, examples are located in the XmlVariableInjector class (and Test) and the AboutKoans.java file
Something's wrong:
If the koans app is constantly timing out compiling a koan, your computer may be too slow to compile the koan classes with the default timeout value. Update the compile_timeout_in_ms property in koans/app/config/config.properties with a larger value and try again.