The storage has several different tabs. What are they for?

In the tabs, the items and resources stored in the storage are distributed by group and type.
The Main Resources tab contains primary resources extracted from various objects in the storage.

The Production tab contains a group of resources produced in industrial buildings; 

The Food tab contains all resources that can be grown, cooked in the kitchen, obtained from animals, or crafted at the mill.

The Rare Items tab contains resources that are mined and used only on specific story islands - they cannot be used in the village or on any other islands. 

The Events tab stores the resources that the player collects and uses when passing the Event Islands.