Plasticwright is now offering the manufacture of your custom and prototype circuit boards! Below you will find links to software, design tutorials, and general guidelines. Please see the PCB Milling Link in the navigation bar above to see our design requirements.
Eagle Light: CadSoft offers the light version of their PCB design software free for non-profit use. They also allow this version to be used free of charge for evaluation and production data. Limited to one schematic sheet, 2 signal layers, and a maximum 100mm by 80mm routing area.
Design Spark PCB: Brought to you by RS Components. Little to no restrictions on use. Free for commercial and personal use after registration.
Instructables has some very good tutorials on how to design circuits in Eagle: