React Studio expert // Create simple template with Cloud Firestore querys

React Studio ( [login to view URL]) its not well documented for beginners. I need a basic template to learn how to interact with Firestore with React Studio The structure of the Firestore database is simple: apps - app1 - menus - menu1 - item1 - item 2 - menu2 - item3 - item 4 - app2 Need hierarchical and dynamic views : apps list / menus list / items list