iPhone: UI design, mockup tools, and agile practices
I'm new to iPhone apps world and would like to know a few things:

1) Where can I learn more about designing iPhone UI?
2) What would be your recommended mockup/prototyping tools for iPhone? (preferably lightweight, but will accept all answers)
3) Have any of you done iPhone development utilizing TDD and Continuous Integration, if so, care to share?

Thanks!
iPhone: UI design, mockup tools, and agile practices
===

I'm new to iPhone apps world and would like to know a few things:

1) Where can I learn more about designing iPhone UI?
2) What would be your recommended mockup/prototyping tools for iPhone? (preferably lightweight, but will accept all answers)
3) Have any of you done iPhone development utilizing TDD and Continuous Integration, if so, care to share?

Thanks!