I am looking for best technical document for web development. which covers everything like
Which explains the purpose of extend,include or defining new class on odoo js part.
Which explains everything from basic to advance level.
As we have two web part now, 1 is website part and 2. web part is like web customization on odoo main screen, like developing widgets.
How to define own widget, how to extend the existing widgets,
How to add only 1 function in existing class by using inheritance.
I am curious to learn this web part.
Except this link: https://www.odoo.com/documentation/8.0/ : From here I cannot learn most of the thing.
If any one has than please share , will be appreciated