The Warehouse Page
The Warehouse page is the page that shows you the amount of resources you have for any given resource. There's a few other things here as well worth going over.
The button Stockpile For Prestige is a toggle that either starts selling all your resources or starts stockpiling them.
The Max Size shows the max amount of resources you can hold for each resource
New resources will appear when you have 1/2 the amount of cash you would need to buy it.
The resources listed show basic stats about your resource. From here you can see the name, icon and profit per second for each resource. You can also toggle individual resources to either be sold or be stockpiled. This can be useful when you want to save one resource for a prestige point while still selling your other resources. Resources that are being sold are marked with the coin icon.
The green line pictured tells you how much of the resource you need for a prestige point.
When the orange bar on the back turns light red, its means that the stockpile is full. You'll automatically sell any excess resources.
