It looks like you're using Internet Explorer 11 or older. This website works best with modern browsers such as the latest versions of Chrome, Firefox, Safari, and Edge. If you continue with this browser, you may see unexpected results.
Documenting Your Data As You Create and Work with It
There are as many ways to document your data as there are reasons to do so. From tracking variables as you discover and gather them to describing the variables in your own dataset for a data appendix, find a method that works for you and document from the very beginning. Paula is an excellent resource to consult about methods and tools for documenting.