Instructions
Load "Warcraft III" and begin playing either the single player campaign or a match online.
Create a worker unit and direct it to build a hero shrine in order to create your hero unit.
Check if there is an item in your heroes inventory slot by clicking on the hero and looking at the bottom right hand of the screen. There is a grid depicting the heroes inventory.
Pick up items that are dropped by enemy units or creeps by selecting the hero and right clicking on the item on the group. The item will automatically be placed in your hero's inventory.