Here are some useful sites to help you while using Linux or UNIX or playing games on Linux. Linux an OS is open source software free to download and distrubute. Unix is also an OS though historically closed source, now some Unix projects (BSD family and Open Solaris) are open sourced. Currently on mine I am running Umbuntu which lets you run it within windows, so when I turn on my computer I have the option to run Windows Vista or Umbuntu Linux.

Download from any links listed at your own risk.

OS = Operating System
Open Source = Free to use and distribute

Here are the links to help you:

25+ Useful Linux and Unix Cheat Sheets
http://www.techieblogger.com/2009/10/linux-unix-ubuntu-solaris-cheat-sheets.html

Tips for Linux Explorers
http://www.brunolinux.com/

Linux Games
http://www.linuxgames.com/
http://www.linux-games.com/

Linux Games Database
http://www.happypenguin.org/

42 of the Best Free Linux Games
http://www.linuxlinks.com/article/20080510052539217/Games.html

Linux Gamers
http://www.linux-gamers.net/

Linux Command - Learning the Shell
http://linuxcommand.org/learning_the_shell.php

Linux Newbie Guide
http://www.unixguide.net/linux/linuxshortcuts.shtml

How to look like a UNIX guru
http://www.cs.usfca.edu/~parrt/course/601/lectures/unix.util.html

Unix Guru Universe
http://www.ugu.com/sui/ugu/warp.ugu

Unix and Linix Forums
http://www.unix.com/

Unix/Linux Tutorials for Beginners
http://www.ee.surrey.ac.uk/Teaching/Unix/

Umbuntu Linux- Open Sourced OS
http://www.ubuntu.com/
Super-fast and great-looking, Ubuntu is a secure, intuitive operating system that powers desktops, servers, netbooks and laptops. Ubuntu is, and always will be, absolutely free

Linux
http://www.linux.org/
Linux is a free Unix-type operating system originally created by Linus Torvalds with the assistance of developers around the world. Developed under the GNU General Public License , the source code for Linux is freely available to everyone.

UNIX
http://www.unix.org/
The Open Group is a vendor- and technology-neutral consortium, whose vision of Boundaryless Information Flow™ will enable access to integrated information within and between enterprises based on open standards and global interoperability.

Linux
http://en.wikipedia.org/wiki/Linux
Linux (commonly pronounced /ˈlɪnəks/ LIN-əks in American English,[3][4] also pronounced /ˈlɪnʊks/ LIN-ooks[5] in Europe and Canada) refers to the family of Unix-like computer operating systems that use the Linux kernel. Their development is one of the most prominent examples of free and open source software collaboration; typically all the underlying source code can be used, freely modified, and redistributed, both commercially and non-commercially, by anyone under licenses such as the GNU General Public License.

Linux can be installed on a wide variety of computer hardware, ranging from mobile phones, tablet computers and video game consoles, to mainframes and supercomputers.[6][7][8][9] Linux is predominantly known for its use in servers; as of 2009 it has a server market share ranging between 20–40%. Most desktop computers run either Microsoft Windows or Mac OS X, with Linux having only 1–2% of the desktop market. However, desktop use of Linux has become increasingly popular in recent years, partly owing to the popular Ubuntu, Fedora, Mint, and openSUSE distributions[10] and the emergence of netbooks and smart phones running an embedded Linux.[11][12]

Typically Linux is packaged in a format known as a Linux distribution for desktop and server use. Linux distributions include the Linux kernel and all of the supporting software required to run a complete system, such as utilities and libraries, the X Window System, the GNOME and KDE desktop environments, and the Apache HTTP Server. Commonly used applications with desktop Linux systems include the Mozilla Firefox web-browser, the OpenOffice.org office application suite and the GIMP image editor.

The name "Linux" comes from the Linux kernel, originally written in 1991 by Linus Torvalds. The main supporting Userland in the form of system tools and libraries from the GNU Project (announced in 1983 by Richard Stallman) is the basis for the Free Software Foundation's preferred name GNU/Linux.
Source: Wikipedia

Unix
http://en.wikipedia.org/wiki/Unix
Unix (officially trademarked as UNIX, sometimes also written as Unix with small caps) is a computer operating system originally developed in 1969 by a group of AT&T employees at Bell Labs, including Ken Thompson, Dennis Ritchie, Brian Kernighan, Douglas McIlroy, and Joe Ossanna. Today's Unix systems are split into various branches, developed over time by AT&T as well as various commercial vendors and non-profit organizations.

The Open Group, an industry standards consortium, owns the “Unix” trademark. Only systems fully compliant with and certified according to the Single UNIX Specification are qualified to use the trademark; others may be called "Unix system-like" or "Unix-like" (though the Open Group disapproves of this term). However, the term "Unix" is often used informally to denote any operating system that closely resembles the trademarked system.

During the late 1970s and early 1980s, the influence of Unix in academic circles led to large-scale adoption of Unix (particularly of the BSD variant, originating from the University of California, Berkeley) by commercial startups, the most notable of which are Solaris, HP-UX and AIX. Today, in addition to certified Unix systems such as those already mentioned, Unix-like operating systems such as Linux and BSD descendants (FreeBSD, NetBSD, and OpenBSD) are commonly encountered. Mac OS X is also a Unix system developed by Apple Inc. The term "traditional Unix" may be used to describe a Unix or an operating system that has the characteristics of either Version 7 Unix or UNIX System V.
Source: Wikipedia

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