Getting started with Knoppix Linux doesn’t have to be costly. Chances are you already have everything you need. The requirements are simple. Any computer newer than 5 years old with a working bootable CD or DVD drive should be able to run Knoppix.
Many consider Knoppix to be the most popular live CD. Knoppix has at least one of everything, configures automatically, and is a great way to get your feet wet in Linux.