This list of frequently asked questions will be built base on discussion on the pi-qmc forum and on issues that arise on the bug tracker.
If you are a project member, simply checkout the code and go to the pi-qmc/doc/sphinx/faq.rst file and start editing. The markup language is ReStructuredText, and running make html will build the documentation on your machine so you can proofread the resulting HTML. When you commit your changes to GitHub, the websites will be automatically updated with your changes, including the FAQ page.
Read this manual and go to the pi-qmc forum to search for discussions or post your own questions.