Here you can find my popular PCB Design Tutorial in PDF format, freely distributable for educational and private use. All I ask is that it be distributed in the original PDF form.
If you have ever wanted to know the 'secrets' to good PCB design, you'll find it all (well, a lot of it) in this tutorial.
The tutorial is not tied to using one particular software PCB package, so it is suitable for whatever package you happen to use. It is...