*[http://www.cpctech.org.uk/ Unofficial WWW Amstrad Resource]
*[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://asmtradcpc.zilog.fr Apprenez l'assembleur Z80 ASMtrad CPC (FR)] Learn how to code with Z80 Assembler on Amstrad CPC
*[http://logonsystem.eu/html/downloadlogon.htm CRTC Compendium] Everything about the CRTC - incl. examples
*[https://www.grimware.org/doku.php/documentations/software/locomotive.basic/start Locomotive BASIC reference] Built-in functions and keywords explained