Instructables.com has a great Arduino section. There are many example projects included with the Arduino software as well as on their site. The getting started with Arduino/Processing books are great also.
I have yet to come across a project that I want to build that someone has not at least started coding. It makes it very easy to modify/merge others codes/schematics to suit what you are trying to do.
The firmata stuff is very interesting also...makes it easy to interface Processing GUI's with the Arduino.
I started with this Arduino kit from Sparkfun last summer. I had no electrical experience before and I learned a lot from it. Since then, I've made a couple of my own little Arduino based projects.
