The preferred way to help with the development of YajHFC is to contribute to the project itself.
If you want to do that, there are several things you can do:

• Write additional documentation
• Translate YajHFC (or documentation) into your native language (no programming skills necessary; look at the this article or contact me for details)
• Contribute code
• Create an installer/package for your favorite OS/Linux distribution
• Last but not least: If you find a bug or strange behaviour, write me a mail with a bug report.