The File Library is where you access and manage the files stored on your website, such as digital photos or online documents that have been saved to your site. You can also add new files or remove old files from here — the file library makes it easy to link to various files when you are editing pages on your site. To add a file to your File Library:
Once the upload process is complete you can preview any file you've uploaded by clicking the file name and then clicking Preview Selected File.