Which good resources for starting widget development for blackberry do you have?
Are there any tutorials that go further then a hello world? Advices on how to structure your app how to integrate second party java-script libraries something like this?
Sadly the rim documentation is nearly non existent.
This is an excellent blog with advanced concepts and tutorials:
http://www.thinkingblackberry.com/
And this site has a wonderful tutorial on creating a blackberry game that describes and exemplifies complex layout issues.