*[http://grimware.org/doku.php Grimware] is a really nice site with hardware info and hacks for the CPC machines... give it a try!
*[http://logonsystem.eu/html/downloadlogon.htm CRTC Compendium] Everything about the CRTC - incl. examples
*[https://www.gladirgrimware.comorg/CODERdoku.php/LOCOMOTIVEBASICdocumentations/referencesoftware/locomotive.htm Gladir (FR)basic/start Locomotive BASIC reference] Built-in functions Locomotive BASIC referenceand keywords explained*[https://www.sean.co.uk/books/amstrad/index.shtm The Basic Idea] Amstrad Basic tutorial by Sean McManus
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*[https://www.facebook.com/groups/281939335598581/ Amstrad GX4000/PLUS Users]
*[https://www.facebook.com/groups/354709275176426/ AMSTRAD CPC LATEST GAMES]
*[https://www.facebook.com/groups/amstradbelgique/ Amstrad Belgique]
*[https://www.facebook.com/groups/amstrad.eu/ Amstrad.eu CPC 464 / 664 / 6128 Old & + / GX4000] - mostly French
*[https://www.facebook.com/groups/1120607071477318/ Amstrad CPC pour toujours and beyond]
*[http://www.prodatron.net Prodatron's page] ([[Prodatron|Prodatrons]] homepage includes info and downloads of his productions as well as a lot of downloads for CPC Digitracker modules (MDL), OCP Art Studio pictures and Scene demos)
*[http://www.symbos.de SymbOS] Official homepage of the operating system [[SymbOS]]
*[http://koaks.amstrad.free.fr/ Koaks (FR)] Homepage of Jérôme (Sid) Le Saux
*[http://www.FutureOS.de FutureOS] - Official homepage of the operating system [[FutureOS|FutureOS]] for the CPC6128 and CPCPlus.
*[https://cpcfreak.cpc-live.com CPC Freak] Homepage of Kevin (arnoldemu) Thacker's CPC productions