After some Arduino basics, installing the IDE was quite easy. You only have to watch for installing the windows drivers for the Arduino Uno board. That's what I forgot, but after reading the IDE-installing-tutorial everything went fine.
If you already did some programming in C or any similar language and played with some microcontrollers the IDE and language look quite familiar. If questions arise, there are a lot of tutorials and information available not only on the Arduino Homepage but in serveral other Arduino communities and information sites (s. page 64/ 65) around the web.
Next is heating up the soldering iron because the breakout boards have to be finished. If you plan to order the breakout boards from Sparkfun pay attention to the wrong part number in the parts list on page 67. The right part number is "BOB-08276". If you have to order additional electronics parts like LEDs or resistors, consider buying the 2.54mm/ 0.1" headers and the 2mm female headers there. They might be much cheaper there.
|Fixing the male headers|
|Third hand tool|
|3.3V voltage check|
There is not much more to say about the button and the bell system. Everything is described very well, so I did not hit any roadblock. Except I first had a buzzer which draw too much current and didn't buzz but sounded more like whining, I had no issues at all. After replacing it with a 5mA type, the buzzer was clearly audible.