Dive into the core

• When can I start from?

• http://developer.mozilla.org/en/docs/Hacking_Firefox

• What languages/technologies are used to develop Mozilla Products?

• XPFE(XUL/JS/CSS), XPIDL, XPCOM (C++/JS)

• Visit http://www.xulplanet.com/

• Where can I find help?

• IRC: moznet (try channels such as #extdev, #developers, #seneca, #xulrunner)

• How can I access the source code?

• http://mxr.mozilla.org

• Getting started with extension creation

• http://kb.mozillazine.org/Extension_development

• http://ted.mielczarek.org/code/mozilla/extensionwiz/

• http://zenit.senecac.on.ca/wiki/index.php/Club_Moz

• http://www.csie.ntu.edu.tw/~piaip/docs/CreateMozApp/index.html