The community is working hard on documenting the ODK-X tool suite and organize it in an intuitive way. Visit the documentation universe by clicking the button below.
If you are looking to trying out some of the ODK-X tools, you can jump directly to trying out the ODK-X Tables sample app to get an idea of the possiblities. For instance you could check out the sample application for a longitudinal clinical study built with ODK-X Tables.
You can also check out the the ODK-X Survey sample app to see how Excel based questionnaires can quickly be turned into digital data collection tools for Android devices.