Steve Hernandez (also known as pacmanfan) Blog, to whom I am indebted for making SLA printer information available and playing a major part in the online 3D printing community:
http://probjectblogs.blogspot.com/
General 3D printing resources, including sourcing the parts needed for the printer:
http://www.buildyourownsla.com/forum/
http://www.reprap.org/wiki/RepRap_Options
http://3dprinterdlp.com/
Raspberry Pi 2 resources:
https://www.raspberrypi.org/documentation/
http://pi.gadgetoid.com/pinout
https://pypi.python.org/pypi/RPi.GPIO
Big Easy Driver resources:
http://www.schmalzhaus.com/BigEasyDriver/
Stepper Motor (17HS19-2004S):
http://www.omc-stepperonline.com/3d-printer-nema-17-stepper-motor-59ncm84ozin-2a-17hs192004s-p-18.html
Aluminum Extrusions:
http://www.mendelmax.com/?wiki=getting-started-with-misumi-extrusions/
http://us.misumi-ec.com/vona2/mech/