How to install Debian Squeeze on Apple iBook G3 with PPC architecture

This instruction describes how to install Debian Squeeze on an iBook with a G3 PPC CPU. It is the way that worked for me and it might be usefull for others who want to bring back some live to a nice little machine.

0. Preparations
1. Shrinking the Mac OS partition
2. Installing Debian Squeeze
3. Configuring Debian Squeeze
    3.1 Right-click by Ctrl+click
    3.2 Function keys and eject key
    3.3 Soundcard
    3.4 Keyboard mappings
    3.5 Airport
    3.6 Power management
    3.7 LXDE