This page contains a variety of links to World of Warcraft related resources that I have personally found useful.

Gold Making

The Undermine Journal

The Undermine Journal (TUJ) is a great source of gold making information, including best buys and email notifications of bargains on your server.

https://theunderminejournal.com/

Wowuction

Wowuction is another auction house datamining site.  Information here is compiled and presented differently from TUJ and is preferable in some areas. There is also a wowuction addon to allow import of prices into in game tooltips.

http://wowuction.com

The Consortium

Home of the excellent Trade Skill Master addon and source of some great gold making information.

http://stormspire.net/content/

Macro and Interface Related

Wowinterface

Wowinterface is the home of some of the best addons available in World of Warcraft. It has an active and helpful forum community.

http://www.wowinterface.com/community.php

Curse Gaming

Home of literally thousands of addons for World of Warcraft.

http://www.curse.com/addons/wow

Macro Toolkit

An excellent macro extender (used to take macros beyond the 255 character limit). Does a lot more than merely allow macro extension and is required for many sophisticated macro used on this site and others.

http://www.curse.com/addons/wow/macro-toolkit

Supervillain UI

This is a complete UI replacement and not just an addon. It can be seen in many of the screen-shots I post here on Wowgoldmillionaire.com. The developer, Munglunch, is friendly and approachable.  Mung is actively involved with the users of his work and well worthy of a donation! *hint hint*

http://www.wowinterface.com/downloads/fileinfo.php?id=16837#info
see also
http://supervillainui.com/ (under development at time on inclusion)