Interaction with 3D models using Blend4web?

Question

Web development

An object (Cube) was created through the blender, then uploaded to the html page using Blend4web. How you can interact with this object.
Example:

• Change color on click
  
• Enable animations
  
• change preloader
  

Answer 1

In other words: "Teach me blend4web. I'm too lazy to open the documentation and tutorials on the developer's site."