AppleScript - create Collection...

Hi,

I know there is a Dictionary but I'm missing a Documentation with some examples to understand what is possible and what not.

I have 2 things what I need. Maybe someone a idea hot to realize it:

1. How to crate a new SmartAlbum - (as example - find photos with 3 Stars)
2. How to insert all folders from a one system folder (as example - my folder ~/Photos has 10 subfolders. I need to insert the 10 folders into Sessionfavorites)