About your Inventory Page
Your Major Equipment
You can view the equipment you have purchased in the shops. If you want to read about them, you can click on their image to bring you to page that explains their purpose in more detail.
Some items, like the potions, can be used. To use an item, just click on the item you want to use. It will bring you to a page that will explain how to use the item.
Your Consumables and Goodies
Creatures can use consumables and goodies to increase in evolution points, enabling them to grow and evolve. You can find these while exploring the world, and use them on the creature pages. This page will only show you which components you have available, and how many. If you do not have a particular goodie, it will appear faded out in gray text.
You can upgrade your plots of land if you have enough building components. There are four types of building components, each of which appear listed on this page, indicating how many you have gathered. You can gather components by exploring the world - each area will allow you to gather different types of construction components.