This is an awesome web site for beginners to learn their iDevice. Not only is the content superb but the navigation via headings allows you to easily and quickly get to the parts you are interested in. Also, the fine tuning to your particular device is exactly what beginners need. It avoids the tedious “if your device is x then do y or if your device is w then do z etc.”
For best results they recommend that you access the web site from your computer while following the lessons with your iDevice.