Basics

Add Objects: Click the Cube, Sphere, or Plane icons in the toolbar.

Select: Click an object in the 3D view or the Hierarchy list.

Transform: Press W (Move), E (Rotate), R (Scale).

Properties: Press P (Toggle Sidebar).

AI & Logic

Change Color: Use the "Appearance" section in the right sidebar.

Add Scripts: Select an object, type a behavior (e.g., "Spin left"), and click Generate Script.

Play Mode: Click PLAY to test your scripts.