Inventory app

I am new to Google sheets and App sheets and I am lost. I need a basic inventory app, We have a shop and 2 vans. I just need to know what we have and where it is. I would like to have a view for each location, and to be able to scan things in and out. We don’t need sales dates or anything. We could have the same parts in all three locations. Any help on tables and how to do this would be greatly appreciated.

Go to https://www.appsheet.com/templates and study the inventory apps.