Show a sort of help 'overlay'
<p>I want to make my application a bit more user friendly so I was thinking of showing a sort of overlay that highlights different components when the user starts the application for the first time.</p>

<p>What is the best way to start implementing this? </p>

<p>Here is an example: </p>

<p><img src="http://i.stack.imgur.com/53D8E.png" alt="enter image description here"></p>
