PCB Design

For schematic and pcb design you can use Eagle from Cadsoft.
EAGLE Light is freeware, and has the following limitations:

  • The useable board area is limited to 100 x 80 mm (4 x 3.2 inches).
  • Only two signal layers can be used (Top and Bottom).
  • The schematic editor can only create one sheet.
  • Support is only available via email or through the forum.
  • Use is limited to non-profit applications or evaluation purposes.

You can Download eagle 5 here.

Part libraries and documentation you can also find on the cadsoft page

More info for getting started with eagle you can find at:

Instructables:
Draw Electronic Schematics with CadSoft EAGLE
Turn your EAGLE schematic into a PCB
How to make a custom library part in Eagle

An Eagle Workshop (in Dutch)

Eagle 3D get a 3D rendered image from your eagle layout ( you need povray for this)

Adittional Eagle Libraries and more Eagle Links @ Opencircuits

Sparkfun Lecture on eagle: Schematics, PCB Layout, Creating a new part