I am using QGIS 2.18.16 on Windows 10.
What I want is a label to appear within the boundaries of a polygon.
I select a layer, then select command Layer>Labelling, and I get:
From here, I can change "No Labels" to "Show labels for this layer".
But I can't actually create label text.
I find a clue in a prior question:
“Labelling polygon using QGIS?”
The answer was: The layer you are trying to label must have at least one attribute field populated with data. You can then turn on labelling in Layer Properties and select which attribute field to use for your labels.
I can enter command Layer>Open Attribute Table, and what I get is:
If I need something in the attribute table in order to apply a label, how do I accomplish that?