To share folders in Windows 8, you can accomplish this by moving the shared content to the Public folder. It is possible to share content that is not in the Public folder. The following steps below document how to make any folder accessible by another computer on the network.
Right click -> Properties
Select the Sharing tab
Click Advanced Sharing
Select "Share this folder"
Provide a share name and click Add
In the drop-down box, select Everyone and click Add
Change the Permission Level for Everyone to "Read/Write"
Now you should be able to access the share via
\\<computer name>\<share name>