Keeping large tag lists organized
Use an "Other" Tag to Stay Organized
If your project is complex and requires a lot of tagging, it makes life a lot simpler if you tag every entry with at least one tag from each tag group.
In order to do this, it's important to have an "other" or "N/A" tag in every tag group so you can keep track of all entries–even those that don't require a tag from that tag group (which get the "other" tag.)
To get the most out of your data, it's also a good idea to take a look at all the entries that received an "other" tag once you've finished tagging to see if any trends are bubbling up late in your analysis that require additional tags.