OneDrive is an option freely available as part of Windows Live.
http://windows.microsoft.com/en-gb/windows-live/essentials-other#essentials=overviewother
This link is where you start to get it:
https://onedrive.live.com/about/en-gb/
To upload click on this link:
Place the cursor on Files and click on Upload.
A window opens with Choose File to Upload. Place the cursor on the file to be uploaded and click on the Open button.
A rectangular box appears containing the file that has been uploaded. Check the box in the top right corner of the rectangular box.
Click on Share and then click on Get a Link.
Click on PublicClick on Create Link
Click on Everyone under Shared with.
Click on Shorten.
Place the cursor in the shortened link, right click and select Copy.
Paste into your reply to these forums.
Click on Done.
It is important to Paste the link before clicking on Done to avoid pasting the wrong link.
To post a link access your OneDrive where you placed the files to be shared. Place the cursor in the Address Bar, right click and select Select All. Right click again and select Copy to place the address in your Clipboard. Place the cursor in an open message here, right click and select Paste.