I have pictures and instructions for quilted projects on 3 different computers all saved under "quilts" and different projects on each computer. I try to remember to put them on jump drives now and then and put them on my main computer so I can back them up to the external hard drive. A system...no, but I have nearly as much fun looking for a particular one as I do exploring the "free" patterns and tutes. The only thing systematic about my way is to use the word "QUILTS" as the file name where I save them. They are saved in many different formats and I try to make the name somewhat descriptive of the pattern or item.