interpreted vs compiled code
APIs
Javascript running order
Troubleshooting Javascript
variables, objects and operators
Functions
Conditions or Loops
Events
JSON and GeoJSON
fundamental geometries
TopoJSON
How to create a GeoJSON, convert shapefile or CSV to GeoJSON on QGIS
How to simplify a GeoJSON on MapShaper
optional
Geospatial data from scratch (Data entry –> geocoding –> csv to geojson conversion)