This is the Back to Ferelden mod from Dragon Age: Origins. It is a collection of several items that will allow you to make a permanent change to your character. 

Installation:

You will need to install this mod from the provided file, as it is not a standalone application. If you have not installed the game, you will be redirected to a link that will allow you to install the game on your PC.

To install the game, you need to go to the official website and download the latest version of the game. After you have downloaded it, you will be able to install it. To install the mod, you need to go to your override folder, find the directory for Back to Ferelden, and then you will find the file. You will need to unzip it, and then you will be able to install it.

To view the items in your inventory, you will need to enable the console to the game, and then you will be able to find the items that you have in your inventory.