The Shipping area lets you edit the following areas: Shipping Method, Status (Enabled or Disabled) and Sort Order.
It also shows a few actions that can be done, including Install, Edit and Uninstall
If you want to offer free shipping on orders above a certain price then install / enable this module.
The customer will then have the option of selecting your normal shipping rate or Free shipping if they spend over your limit
The areas to fill out are: