About jQuery Code inside learning and V8

About jQuery Code inside learning and V8

Hi:

I try to learn more jQuery Code inside in these days, and recently find some issues about V8.
Some How, some people suggest reading V8 can help more understanding about javascript, but 
it indeed a huge work. I didn't see a book really analyze it in deep. And furthermore, I can't make 
sure it really can help me to know jQuery better. For me, jQuery Code is still many unknown and 
powerful, like some issues about promises using.
So my problem is, is reading V8 really help to understand more about javascript, and can then 
help to lean jQuery Code inside more? And if yes, how to do a right step to learn them. 
Thanks a lot.