Symfony2 Service Config Converter
Also usable as a symfony command.
I think this is great to convert examples into your desired format.
And a simple link is pretty boring! So there are two more links…
Create your own framework… on top of the Symfony2 Components
A very nice tutorial from Fabien Potencier. And it is also a good start to get an overview over some symfony components.
An – for me – older link is the cheatsheet:
Just noticed that I did not used it so far… damn you… google search box!