Old papers, still up-to-date

In the 'old' days I have made a few tutorials about Delphi(4/5) for The Software Developer Pages. These tutorials and papers are still available behind my company's website. They are available in english and dutch, and not updated for ages, but some papers are still up-to-date today. The most papers are at beginner-level because, guess what, I was those days a beginner.
There is even Delphi 5 code available for download which should be working easily in BDS2006.

The main page can be found here. (Note I do not update this anymore, so it looks a bit odd now)
Some still up-to-date papers are:

• Object Oriented Programming in Delphi
• VCL Programming technics and examples
• Hooking an event handler
• Delphi and databases (BDE, but TDataSet is still around) (4 episodes)

I keep a permanent link to this papers on this blog.