hoekstra.co.uk
MySQL
MySQL - a cheap and cheerful open-source database. But if you have the money and you want real performance, scalability and control, then Oracle should be your first choice.
SQL Server
Cool stuff you can do with SQL Server!
SSRS
Useful tricks to get the most of this Reporting tool
Joomla
Joomla Components and documentation
Linux HowTos
My collection of HowTos for Linux, based around Ubuntu, RedHat and Gentoo Linux www.gentoo.org.
SSIS
Approaches and code for SSIS - It started off as the ginger-haired stepchild of Microsoft in 2005, and is now less flakey.
Windows
Evil things that you can do with an evil O/S.
Perl
Practical Extraction and Report Language, initially designed for processing text, but now used for nearly everything. It is the language that glues the Internet together. Above all, it is a joy to use.
Oracle
Grizzly experiences from using an Oracle Database.
DevOps
DevOps, code management, project management, and character assassinations of those who did it poorly.
BASH, SED & AWK
Scripting stuff you didn't know but were too afraid to ask...