Digital preservation is a series of managed activities and actions taken to ensure the accurate rendering of digital content for as long as necessary, regardless of media failure or technological change. Digital files, unlike books or paper, degrade at a much faster rate.
The main activities to consider when preparing to archive your own digital files are:
File names are more important than you might initially think. They can help you or others find a relevant document but they can also hinder your understanding of of a file's purpose.
Develop a plan for naming your files but most importantly, be consistent and descriptive.