This Quick Introduction and related pages explain the Debian operating system to new users. No technical words are used. What "Debian" is and how you can use it is explained without complexity.
Debian is a free operating system (OS) for your computer. An operating system is the set of basic programs and utilities that make your computer run. Debian uses the Linux kernel (the kernel is the core of an OS), but most of the basic OS tools come from the GNU project; thus we give credit to all sources when we refer to Debian as a Debian GNU/Linux operating system.
Debian GNU/Linux provides more than a pure OS: it comes with over 15490 packages, precompiled software bundled up in a nice format for easy installation on your machine.
Are you new to Linux? Finding where to start can be a daunting task! There are many places to start and there is so much information that it can be very confusing. This wiki is a very good place to start as are these webpages:
How to install Debian
If you have already decided that Debian Linux is for you and you are looking at how to get it and install it.
Introduction to Linux, A Hands on Guide
Debian GNU/Linux Reference Card (The 101 most important things when using Debian GNU/Linux)