*[http://grimware.org/doku.php Grimware] is a really nice site with hardware info and hacks for the CPC machines... give it a try!
*[https://www.chibiakumas.com/z80/ Learn Assembly Programming with ChibiAkumas] Multi-platform Z80 tutorial
*[https://asmtradcpc.zilog.fr ASMtrad CPC (FR)] Learn how to code with Z80 Assembler on Amstrad CPCwith [[BDCIron]]*[https://roudoudou.com/AmstradCPC/programmationAssembleur.html Programmation Assembleur (FR)] Learn how to code with Z80 Assembler on Amstrad CPC with [[Roudoudou]]
*[https://amstradpushnpop.ovh/ Amstrad push'n'pop (FR)] Referencing articles about Z80 Assembler on Amstrad CPC
*[http://logonsystem.eu/html/downloadlogon.htm CRTC Compendium] Everything about the CRTC - incl. examples