This Tutorial is on a 'Open Magazine Effect' using the standard filters in Gimp. A hard copy of the steps can be found at this address.
https://sites.google.com/site/gimppdftutorials/gimp-files-9
The hard copy is in text format and will suit a more advanced user of Gimp. If you know your way around Gimp's filters then this should not be to difficult to accomplish.
