At QlikWorld 2020 I planned to host a session called "Top 10 GeoAnalytics Tips". Here's the app with all tips including test data. Tip titles as follows, see the app for details.
Line wrap
MGRS
Correcting location
Some tips for Cluster
Overview map
Images from Sense server
WMS to TMS
Speed up connector operations with csv
WorldMap
WMS parameters
Map theme settings
Drill down to floorplan
Time zones
Tooltip table
Find nearest airports
Decimal degrees
Highlighting
Basketball
GeoJSON mix
Image library
Opacity background layer
Arbitrary expressions for the chart layer
Link to app
If you liked it, here's more tips in the same style: