If you have a question about the core Johnny.Decimal system’s concepts, ask it here.

This category is for any questions related to a JDU course or material. You’ll find a sub-category for each of the courses, or you can post general questions in this parent category.

Any questions related to the Life Admin System.

Any questions related to the Small Business System.

Any questions related to the JDHQ section of the site, which includes anything to do with using apps, utilities, scripts, tools, or whatever else with your system.