Experimentation with Photoshop

I have decided to become more familiar with the different types of editing software in order to get an understanding of which is the more effective for my paper based work for my project, for example the DVD cover and the film magazine front cover. Even though we do not have Photoshop on our computers I have decided I should get familiar if I am able to get some time on Photoshop. From this I have watched this tutorial on how to use Photoshop and so I can decide how to edit my covers.