how can beginer with webgl ?

i see code webgl same with opengl es, so i should begin with opengl es first ,after beginning with webgl, can you give your idea ? thanks all

Well I too am really new to webgl. I used one of the available rendering API’s to render my content, and that took care of the gory details of graphics coding, enabling me to concentrate on the things I wanted to do with the rendered objects.
You can check out the following rendering API’s:

Canvas 3D JS Library

Of course if you want to do all your rendering yourself, you need to learn opengl first.