Great sources of FPGA knowledge!

FPGAs!? Now What?
  Free/Open FPGA-from-scratch tutorial from XESS. 140+ pages.
  Pretty great!
  Xilinx WebPack, VHDL, JTAG debug, Spartan.

MIT 6.111 Labkit Manual
  http://www-mtl.mit.edu/Courses/6.111/labkit/

WikiBooks: Programmable Logic
  http://en.wikibooks.org/wiki/Programmable_Logic