The Media Library is where you can find all the files that you’ve uploaded. The most recent uploads are listed first. The list of files contains a small thumbnail version of the image or file, the file name and the type of file (JPG, MP3, etc.), the name of the Author who uploaded the file, the Page or Post which the image was uploaded to, the number of comments and the date the file was uploaded.

When hovering your cursor over each row, a few links will appear beneath the file name.
Edit – Allows you to edit the file properties such as Title, Alt Text, Caption and Description. You can also perform some basic image manipulation
Delete Permanently – Deletes the file permanently from the Media Library
View – Will take you to the display page for that file