As I said on my main page, I'm a big Linux fan. Below, and in the knowledgebase are some of the things I've learned about the OS through my experiences.
Personally I use the Slackware distribution of Linux. I'm not keen on Red Hat, mostly because they seem to be about dumb-ifying Linux so that the average computer user can use it. I don't think that's what Linux is about. I think Linux is for people who are fed up with a dumbed-down OS which is full of bugs and has only one way of doing things being forced down their throats. It's for those who want something stable, fast, insanely customizable and powerful. To me, it's not about cost; it's about the freedom. I can choose how I want to do things. I can choose how my system will look and feel. I can choose which software I want to run. You can't do that with Microsoft Windows.
It's kind of like owning your house as opposed to renting. When something breaks I can talk to literally thousands of other people who aren't just regular-joe users. They too took part in building their system and know it far better than someone who had it pre-installed and just blindly use it. With Windows, when something goes wrong you're stuck. With Linux you have the tools and the resources to figure it out and solve it. If you don't like to do things yourself you still have the choice of a support contract where someone can walk you through it. Hell you can set it up so they can connect to your system across the 'net and fix it themselves! Don't get me wrong; free application software is cool. Almost all the software I use on Linux is free. That includes an ACID-compliant SQL database, web serving, music playing and composition, office applications, games, compilers and web utilities. The leading reason for my choice however is the freedom, not the freeness.
Linux Documentation Project - Everything written down
Linux.com - The main (?) Linux portal
Linux Weekly News - Another portal / news site
Linux Google - Linux specific google searches
Freshmeat - Find Linux apps
Kernel Notes - Kernel specific stuff
Kernel Traffic - The developers at work