PCB Manufacturing Options – There are many popular options for schematic/PCB software. Two popular applications are Eagle and Diptrace. The problem is deciding what fabrication company to use in order to have your boards produced. Digital DIY has put together an in-depth article comparing some of the many services that are offered.
Finding Parts – Designing a circuit board is only part of finishing a project. Finding components is probably one of the most tedious and mundane tasks. Adafruit put together an article and identified some sources for finding parts. This will come in handy in those situations where your primary vendor is out of a specific component you need. I usually purchase my parts from either Sparkfun, Digikey, Jameco, and/orMouser.