1. Shader Graph allows visual creation of shaders in Unity without coding. It works with Unity 2019.3 or higher. 2. To use Shader Graph, the Universal Render Pipeline (URP) must be installed. A pipeline asset is then created and assigned in project settings. 3. A Shader Graph asset and material are created. Nodes can then be added visually to modify properties like color or add effects. Information from textures, vertices, and other sources can be accessed as inputs.