This is your own personal file library for files and links. You can select to share the additions with others or keep them private.
Select Files and Links under My Profile to get started.
Select Add a New Item and select option for URL or file. Follow instructions on the page to upload your file or post your link with a description.
Select Manage my Files & Links if the edit options do not show up beside the files. Edit and remove as you need.
These that you post with the shared option, will show up under the Files & Links area under your profile area +More when people view your profile.
Group administrators, the use of files is important to creating custom pages within your group. Check out the Group administrator instructions sent to you for more details.
That's all folks!