Nothing wrong with Adobe CS1, however, if you don't know it, then its not going to hurt you to try GIMP instead - its free, find it, download, install it.
Then use RobA's Tutorial to get you started...
RobA's GIMP tutorial
Follow the tut, start using the application. Then create your own custom design using those steps. Find other tutorials on this site. Keep learning and experimenting.
Before long you'll be creating masterpieces of your own.
Not that you couldn't do that with Photoshop - its just give GIMP a try!