While the following links are not resources I've created myself, I've found them to be quite good and they should be helpful to those interested in multithreaded programming on linux or windows.

Here is an excellent tutorial on Pthreads - http://www.llnl.gov/computing/tutorials/pthreads/
A whole bunch of Pthreads resources - http://www.humanfactor.com/pthreads/
Pthreads for windows - http://mirrors.kernel.org/sources.re...ll-2004-06-22/

fun to tinker with.