Pretty simple and useful tutorial, where you will open a random photograph with smoke and convert it into something really not friendly for our environment.
Dreevoo Content Image Maker is an awesome little stand-alone Windows app that will help you create images for Dreevoo.com tutorials. Remember, you get paid for every published tutorial.
Often in PHP you want the same block of code to run over and over again and instead of adding several almost equal lines, you can use loops to perform this task much easier.