A Man and His Mutt - http://www.melonfire.com/community/columns/trog/article.php?id=98&page=1 A good guide to the mutt email client.
Breaking out of a chroot() padded cell - http://www.bpfh.net/simes/computing/chroot-break.html This page details how the chroot() system call can be used to provide an additional layer of security when running untrusted programs. It also details how this additional layer of security can be circumvented.
Desktop Linux - http://www.desktoplinux.com/ This site covers a vast array of topics for the Linux user.
Dot Files - http://www.dotfiles.com/ Great examples of dot files for various programs under linux.
Linux eMail Server - Mail Transfer Agent (MTA) software - http://www.yolinux.com/TUTORIALS/LinuxTutorialMailMTA.html Internet mail is sent from the email client to the email server which routes it to the intended destination which will also be an email server. The protocol by which the email servers communicate is called SMTP (Simple Mail Transfer Protocol) and the email server software is known as the MTA or Mail Transfer Agent. This tutorial lists the popular MTA eMail server programs used, basic Sendmail email server configuration as well as Postfix email server configuration. Also listed are Mailing List programs and the RFC's (Request For Comments) on which the internet email standards are currently or eventually based.
Linux Man Pages - http://linux.ctyme.com/ HTML versions of Linux Man Pages. If you don't know what these are, you probabably worry about viruses and windows updates every week.
Linux Newbie Guide by Stan, Peter and Marie Klima - http://linux-newbie.sunsite.dk/ A great resource for those just starting out with Linux. LNAG and LAME have both helped me with some basic concepts in getting started with linux.
List of Linux Chat Rooms and Discussion Forums - http://www.chatmag.com/topics/itech/linux.html A Comprehensive List of Linux Chat Rooms and Discussion Forums on IRC and The Internet
Procmail Strategies Against Spam - http://pm-lib.sourceforge.net/README.html Spam is a problem. This document contains a detailed analysis of various ways that Procmail can be used to combat spam.
Procmail Tips - http://pm-doc.sourceforge.net/pm-tips-body.html This is a Procmail Tips page: a collection of procmail recipes, instructions, howtos. The document also contains URL pointers to the procmail mailing list and sites that fight against Internet UBE. Procmail is powerful mail handling tool and a lot of space here has been devoted to discuss about UBE (aka Spam) and its essence. You will also find many other interesting subjects that discuss about internet mail in general: mail headers, MIME and RFCs. Another part of this document – to your blessing or curse; the author happens to know Emacs quite well – is dedicated to Emacs and its package gnus.el, simply because Emacs is powerful tool that can be used mail and news reading. Nowadays Emacs is also available in Windows platform as well. This is not to say that existing Unix elm(1), mutt(1) or pine(1), slrn(1) mail/news programs are bad, they are just limited in power compared to Emacs and usually tied to Unix platform. The tips are compiled from the procmail discussion list, from comp.mail.misc and from the author's own experiences with procmail.
Some VMware images - http://www.thoughtpolice.co.uk/vmware/ If you wish to try out several linux flavors without interruption to your current OS before you really install it, VMWare plus these images will do just that and bypass the pain of installing them in VMWare too!
Using chkconfig & /sbin/service to manage and run startup scripts in Red Hat - http://www.netadmintools.com/art94.html Red Hat includes the checkconfig & service utilities to help you manage your start up scripts and save you a lot of typing. This is handy when you're adding your own services and also in managing the already existing services. chkconfig is available if you want to use it on other distributions that may not come with it - just go to freshmeat.net and look it up. /sbin/service is just a shell script that comes as part of Red Hat's initscripts package.