Here is a one-stop-shop of useful links to help you find your way around the Mozilla world.

Getting Information

Looking up code: Directory Explanations	MXR	MXR Trunk	MXR Branch
Build Status:	Firefox Trunk Tinderbox
Finding checkins:	Bonsai
Getting Builds:	Firefox 3	Firefox 2.x.x.x	Thunderbird 3.x	Thunderbird 2.x.x.x
Bugzilla:	New Bug	Search for Bugs
Meeting Agendas:	Monday Update
Newsgroups:	m.d.a.Firefox	m.d.quality	m.Planning
Pastebin:	pastebin

How-To

Build:	Get Source	Configure	Build	Other Build Stuff
Testing:	Overview	XPCShell	Mochitest	Reftest
Coding:	Mozilla License	Javascript Style	General Coding Style
About Bugzilla:	Bugzilla Reference	Bugzilla Etiquette
QMO:	QMO
Wiki:	Create Ugly Tables Like This One