How does linux run programs?

[windos_no_thanks]

here is a guide to the filesystem, hope this is useful..
http://www.qvctc.commnet.edu/classes...nux_files.html

Looks useful but some things do not apply to Knoppix, for instance: "/root – The root folder contains the kernel and other important system files".
In Knoppix (and all other modern Linux distros I've seen) /root is just the home directory of the root user. The kernel is in /boot.