Linux on PowerPC

Resources on installing Linux into PowerPC Macs

This site is the best for accessing the Mac BIOS called OpenFirmware
http://ben-collins.blogspot.com/2010/08/booting-your-ibook-g4-from-usb-stick.html

Older instructions on installing Linux on Mac
https://www.debian.org/releases/jessie/powerpc/ch05s01.html.en

From IBM
https://www.ibm.com/developerworks/community/wikis/home?lang=en#!/wiki/W51a7ffcf4dfd_4b40_9d82_446ebc23c550/page/PowerLinux%20Boot%20howto

Best (for me) Linux Distribution for running on PPC hardware
https://ubuntu-mate.org/