Resource folder resources loading

I want to know about multiple points:

1. When Resource folder data gets loaded in memory?
   
2. At scene loading time I want to load many resources via Resource.Load() then how to deal with loading screen? Based on previous scene selection, next scene resources get loaded so I want to display loading screen over here so its seems like continuous, normal scene resources get loaded as well specific choice based resources get loaded.

Please give me some suggestion for my above points.

 

It doesn't. It loads specific objects when you request them via Load()

Put a fullscreen Canvas/Image up and disable/destroy it when you've finished what you need to do. You could even put it in its own scene and load it additively when needed.

 

• Can you able to specify more about load resources addictively?
• My previous scene will decide, which resources will require to load into current scene, so how to handle this situation?

 

https://docs.unity3d.com/ScriptReference/SceneManagement.SceneManager.LoadScene.html
https://docs.unity3d.com/ScriptReference/SceneManagement.LoadSceneMode.Additive.html