Windows Phone 8 enables you to choose the apps you want them to display its status on the lock screen of your phone. For instance a notification that you just got a new Gmail email.
If you know how many years or months you got left until the retirement or any other event or project in your life, Excel can return you the exact date and the number of days left to reach it.
Mac OS X Moutain Lion and its Safari web browser sharing options allow you to share and send any web page vie email as a PDF attachment in a matter of two clicks.
If you want to start learning PHP and MySql, the first step is to setup complete environment on your local computer. This will include Apache web server with PHP support and MySql database server.
You can visually insert a radio button into your form and set its properties. Use radio buttons when you want users to select only one choice from a set of options.