What is Arch Linux?
Arch Linux is an independently developed, i686/x86-64 general purpose GNU/Linux distribution versatile enough to suit any role. Development focuses on simplicity, minimalism, and code elegance. Arch is installed as a minimal base system, configured by the user upon which their own ideal environment is assembled by installing only what is required or desired for their unique purposes.
GUI configuration utilities are not officially provided, and most system configuration is performed from the shell and a text editor. Based on a rolling-release model, Arch strives to stay bleeding edge, and typically offers the latest stable versions of most software.
Should i install Arch Linux?
If you wish to embrace the 'do-it-yourself' approach and require or desire a simple, elegant, highly customizable, bleeding edge, general purpose GNU/Linux distribution you should install Arch Linux.
Who shouldn't install Arch Linux?
If you do not have the ability/time/desire for a 'do-it-yourself' GNU/Linux distribution.
If you believe an operating system should configure itself, run out of the box, and include a complete default set of software and desktop environment on the installation media then DO NOT INSTALL Arch Linux.
Let's do it!
Okay now that you have decided to take the plunge and install Arch Linux just follow this guide closely and you'll have a working Arch Linux in no time.