Here is the place where you can find lots of introductions, tutorials, projects, tips/tricks and useful sites about parallel programming, multi-process programming, multi-threaded programming, distributing programming and even mixed-mode programming (like MPI, PVM, OpenMP, Pthread, ...etc). Especially multi-core (dual-core, quad-core, ..etc) CPU and cluster machines (lots of computers connected by network) era is coming, which make parallel/distributed programming inevitable. Unfortunatelly the majority of software engineers are still working on traditional sequential programs and hesitate to move to parallel programming due to its complexity of programming and debugging.  After learning from this web site, you may have different opinions.