GeoExt tutorials show the library in action. Basic tutorials help new developers get up and running quickly, while the advanced section includes how-to’s on more sophisticated setups.
From zero to rich mapping application in 5 minutes!
GeoExt.MapPanel, dissected.
Working with OpenLayers layers and the Ext TreePanel
Working with OpenLayers Controls and Ext Button to create elements for user interaction.
Fetching features and displaying in grid. Covers working OpenLayers Vector Feature with Ext Store and Grid