Ext & OL

I'm a web developer working with Extjs and OpenLayers.. This two web framework are very powerful in building gis web aplications.. So I present you web links (api, examples) where you can start learning them.. :]



Extjs:
http://dev.sencha.com/deploy/ext-3.4.0/docs/ - API
http://dev.sencha.com/deploy/ext-3.4.0/examples/  - examples
http://www.projectspace.nl/ - GUI designer.. don't expect too much
http://extjs.eu/ - show how to create you own components.. the advanced way of programming..
http://extjs.wima.co.uk/ - more examples


OpenLayers:
http://dev.openlayers.org/releases/OpenLayers-2.11/doc/apidocs/files/OpenLayers-js.html - API
http://openlayers.org/dev/examples/ - examples
http://dev4.mapgears.com/bdga/bdgaWFS-T.html - advanced example using WFS-T
http://gis.ibbeck.de/ginfo/apps/OLExamples/Index/index.html - great advanced example

In the end you can use GeoExt for easier "communication" with OL and Extjs...
http://www.geoext.org/


Good luck :]