Useful Links for Spartan 3/Xilinx

http://www.rose-hulman.edu/~doering/PLD_Oasis/digilent-sp3.htm

http://www.ee.nuigalway.ie/~fmorgan/private/appliedVHDL/appliedVHDL.htm

http://ece.wpi.edu/~rjduck/ee574_2005.htm

Below San Jose State University has the best notes l've seen so far on
learing to use the Xilinx Spartan 3 Development Board/Verilog
http://www.engr.sjsu.edu/crabill/

http://www.fpgajournal.com/whitepapers_2005/altera_20050915.htm

http://www.fpga4fun.com/

http://www.xess.com/ho03000.html

http://www.jopdesign.com/

http://www.ee.ryerson.ca/~lkirisch/ee8208/projects.htm

http://www.digilentinc.com/