This is the place for searching informations about Debian and PowerPC ports. You'll find links to install procedures, common information and FAQ.
Install information
a good base : Debian On PowerPC
General
the direct rendering infrastructure (DRI), needed to get 3D work, and install info about Michel Daenzer's packages
For Q&A, see PowerPC/FAQ
For an updated list of supported sound hardware see PowerPC/SoundCards