Need help to develop demo app with FPS rate printing on Screen

[SaiKrishna]

Hi,

I'm very interested in SceneJS. To use this framework, I want to develop an application which I can code custom 3D model using SceneJS and should be able to add more objects. I should also able to print FPS to check the variations in FPS as I add more objects to the scene. I'm new to graphic programming, I neither have knowledge on shader programming nor openGL. Being a newbie, how can I start diving into this framework? 

The following steps I wanted to implement (Suggest me if I go wrong):

1. Develop simple demo using Scene loading single cube or sphere or teapot on canvas.
2. Able to print the fps on the screen.
3. Later I should be able to add more triangles(Models) on the canvas either of same type (ex: Teapot) and able to compare the fps with single teapot one.

Am i approaching the right way or please suggestions needed. The provided tutorials neither of them having FPS demo. Please someone HELP ME. I really liked the features stated on homepage but I don't know how can I implement them in my demo.