The most important Resource is without doubt Hans site:

• http://retro.hansotten.nl/

Dave has some excelent BASIC and Assembler Programs and tools for your KIM

• https://github.com/fishhack66/PAL-1-Stuff/

Jims GIT has some quality tips and programs (a1Basic!!!)

• https://github.com/w4jbm/PAL-1-6502-SBC/

My own GIT with sources

• https://github.com/netzherpes

A large google drive full of Magazines, Books, Software and Manuals:

• https://drive.google.com/drive/folders/1-S3AI-qszLDSes50MERtx1RNl9KefTs7?usp=sharing