Joomla SEO Book

This is the only SEO (Search Engine Optimisation) book written specifically for Joomla CMS.

It will guide you into getting better search results positioning for your Joomla website.

Joomla! A User's Guide

This book and its companion site joomlabook.com is a Joomla manual for intermediate  Joomla webmasters

Joomla Comments System by Azrul

Azrul's Joom Comment is just one of the fine Joomla! extensions from azrul.com.

Joomla Cloner: Joomla clone and backup tool

JoomlaPlug's JoomlaCloner is an extesion aimed to provide easy Joomla website backup, restoration and, of course,  cloning.

IceTheme

IceTheme provides Joomla XHTML/CSS clean, simplicity oriented themes(templates)

JoomlaDesigns template club

Joomla Designs Joomla templates club.

Site5 Joomla hosting

Site5 is an US based web hosting company. It features inexpensive shared and reseller hosting and great professional support. TeachMeJoomla itself is hosted on site5 servers.

sm2 Joomla email component

Email Marketing made simple and professional. This powerful Joomla! extension provides a tool to manage email marketing campaigns.

JoomlaShack Joomla Templates

Joomlashack offers high quality CSS based, Ajax enhanced Joomla templates. They also have a free download area with templates and tutorials on installing and using Joomla.