We always advise our customers to create a warehouse that reflects reality. You can create multiple warehouses, define their location, create bins in each of them. It can be barrel, tank or other, in which you can store items in solid, liquid state or pieces. To add new warehouse, go to Resources -> Inventory, click on Manage button, Add new warehouse, or click on Add new bin inside of already created warehouse.
To proceed to "Organizing stock management" video, click HERE.