eagle tricks
Download Eagle:
http://www.cadsoft.de/download.htm (Freeware)
Download all the libraries:
wget -r ftp://ftp.cadsoft.de/eagle/userfiles/libraries/
mv *.lrb /usr/local/eagle/libs (for example)
Download Sparkfun Eagle Library:
http://www.sparkfun.com/tutorial/SparkFunEagle-1-8-09.zip
Auto-route
Always change the Routing grid to 7 or so
Single side PCB (homemade)