Knoppix is as easy as ABC and as useful as a Swiss knife, it's just too good. The whole thing about it is that it's a live CD which means that you pop it in your CD-ROM, reboot and off you go with a 600Mb Linux installation that's got all the software you'd normally use on a personal home PC and more, with loads of eye candy and user friendliness. In the words of Kelly Penguin Girl, eye candy is good (I took of my sys admin hat here). Apart from being a desktop Linux tool it's got hundreds of other useful uses;

• you want to browse the web and loose any trace of the history – now you can with Knoppix
• you haven't got any rights to do anything on your work PC because the windows machine is tightly secured and you've got no Administrator password - run Knoppix;
• you need to run a program on a machine and you don't want to install the program - run it from Knoppix;
• you want a mobile software repository so you can use any machine as your own familiar machine - customize Knoppix and run it;
• one of your web servers died and you need a quick backup fixer - run Knoppix to minimize down time ...

Start using this great tool and the ideas keep flowing and flowing. Knoppix Hacks from O'Reilly has another 100 hacks to get you started.