Amdahl Cluster Quick Start - How to get a network of Linux machines to work as a cluster. By Preston M. Smith. - http://amdahl.physics.purdue.edu/quickstart/quickstart.html
NFS-Root-Client Mini-Howto - Explains how to create client root directories on a server using NFS mounted clients. - http://www.ibiblio.org/pub/Linux/docs/HOWTO/other-formats/html_single/NFS-Root-Client-mini-HOWTO.html
Beowulf FAQ - Basic information about Beowulfs and links to software. - http://www.canonical.org/~kragen/beowulf-faq.txt
Sex, Lies, and Beowulf Clusters - Classification of Beowulf clusters and maintenance tips. - http://fscked.org/proj/clusters.shtml
How to Build a Beowulf - Paper book. Table of contents, online purchasing, and mailing list available. - http://mitpress.mit.edu/book-home.tcl?isbn=026269218X
Linux PC Clustering Project - Instructions for installing Linux on a cluster of Hewlett-Packard workstations. Links to clustering software. - http://hp-linux.cern.ch/
Brahma - Online book with information about history, general information, building and maintaining a Beowulf, and parallel computing models. - http://www.phy.duke.edu/brahma/
Linux Parallel Processing HOWTO - How to make a Linux network into a cluster and discussion of network hardware and software options. - http://yara.ecn.purdue.edu/~pplinux/pphowto.html