How to find and delete duplicate files

If you use your computer long enough, it will get littered with duplicate files. Word documents, Excel spreadsheets, media files etc, you will be amazed at how many duplicate files you have. This is problematic in many ways, not only do the duplicate files mess up your hard disk and take away precious hard disk space, but they also make it hard to find the files you want. Here is a guide that helps you find and delete duplicate files