When you pick items up, they appear in your inventory, the holding space for the loot you acquire while playing Diablo III. You can view your inventory by hitting the “I” key.
Looking at the image of your hero on the inventory page, you’ll see that you have different equipment slots on different parts of your character’s body (head, shoulders, neck, chest, waist, legs, feet, hands, rings, and arms).
To equip your hero with the items you’ve found, left-click on the item you want to equip and drag it to the appropriate slot (outlined in white). You can also right-click on the item to automatically place it in the correct slot.
In addition to displaying the items you’re currently using, your inventory also displays the items you’re carrying but don’t have equipped. Below your active equipment, there are rows of boxes. When you pick up an item, it will appear here. Smaller items, such as potions and rings, take up a single box worth of space in your inventory, while larger items, like spears and shields, take up multiple boxes.
It’s a good idea to manage your inventory so that you don’t run out of space.
Gold is the currency of Sanctuary, and you’ll find it scattered everywhere: in battered chests, on the bodies of fallen foes, and in forgotten tombs. You don’t have to click gold to pick it up; all you have to do is walk over it.
In the course of your quest, you’ll accumulate a large quantity of gold. You can check up on the status of your riches by opening your inventory (default key “I”).
Merchants ply their trade in nearly every civilized area of Sanctuary (and some less-civilized parts, too). Merchants will pay you gold for items that you don’t want and sell you items from their inventory: armor, potions, shields, scrolls, blades, and just about anything else you might want or need. Most merchants are able to repair the durability of your items for an appropriate fee.
Merchants can help fill the gaps in your equipment while you are waiting for a more powerful piece of gear. The quality of their items varies, and while not every merchant will have the perfect item for your class and skillset, they take on new stock constantly, so it’s a good idea to check back with them regularly.
Your stash, a large chest located in town, is a place you can store equipment and other items you’d like to hang onto, but don’t need right away. It’s ideal for holding items you think you might use later or aren’t sure if you want to sell.
Your stash is shared between all characters on your account.This means that if you’re playing your Barbarian, and you find an item that would be better suited to your Witch Doctor, you can drop the item into your stash, and your Witch Doctor will be able to take it when you log in with that character.
If you need more room in your stash, you can buy space from the stash window.