Created a global map by adding the OpenStreetMap and WorldMap layers in QGIS. Drew polygons over that, creating what I believe is a polygon layer.
I've also created a layer of the Nodes/Vertices of the Polygon by clicking
Vector > Geometry Tools > Extract Vertices (see photo).
Would like to extract the latitude and longitude of these polygon points (CSV, GeoJSON, or somehow connect to MSQLServer eventually).
I've tried adding calculated fields to the Attribute Tables of the Vertices layer following but am new to GIS and have been unsuccessful.