Download and try the following OS, and give it a go. OpenBSD v4.7 OpenBSD is a multi-platform 4.4BSD-based UNIX-like operating system, and is fast, simple to install and secure “out of the box”. Download installation files Read the Installation guide Read the Frequently Asked Questions A good introductory book for OpenBSD is the “OpenBSD Command Line Companion” by Jacek Artymiak. It walks you through an install and an intro to OpenBSD.