DeveloperShack

The short version can be found on the Joomla website which consists of the following:
    Although a complete re-installation is recommended, it is possible to upgrade from RC3 to RC4 with the following procedure:

• Backup all files; backup your database.
• Delete all Joomla! core files, but leave any third-party extension files in place, including your configuration.php file.
• Upload/copy contents of RC4 package.
• Execute the MySQL commands to be found in /installation/sql/mysql/diff.sql to implement the necessary database changes.
• Delete the entire /installation directory.

CLICK to read more about Upgrading your Joomla 1.5 website to RC4 Karibu

Whether you're a new or advanced user, if you're a web developer who is serious about Joomla! you might want to take a moment to consider the Joomlashack Web Developer Club. We'd like to invite you to join us "behind the scenes" to be a part of something great. We believe this will be very beneficial to those who use Joomlashack products and resources on a regular basis.

CLICK to read more about Joomlashack Developer Club

So I ran across a post in the JoomlaShack Customization Forums where a Joomlashack customer wanted to place a pathway on every page except the home page. It makes a lot of sense to me as the person viewing the web page would know where they are, they are at home. :-)

CLICK to read more about How to use a conditional statement in your Joomla website.

Whether your building websites for  yourself or clients you will want them eventually rank well in the search engines. Lots have sites about good tips for SEO. If you are building web sites and you like to take your statics seriously, I strongly recomend taking a look at xniu returns.com. As the site says, it's "Page Rank and much more". This site has way too much information to list, so I suggest just checking it out.

Another good site for Firefox Add-ins is Top 10 Must Have SEO Firefox Extensions!