Question about auto ref

[Namespace]

> Basically, someone needs to implement it and then talk Walter 
> into accepting
> it. That'll be easier for someone like Kenji, who's already a 
> major
> contributor, but in theory, anyone can do it.

Are there any tutorials or something similar, which make you a 
bit familiar with the compiler front-end?
Or you have to study the code to learn how it works?