Excelsior

Does anyone know a good tutorial website for learning to use Razor to the most of its abilities?

or for that matter EasyUO...

I have the both and somewhat know about razor and how to write the simple macros but i would like to learn the more intricate ones...

as for the EasyUO i know how to run a macro that is already written but as far as writeing one.. i would like to learn how to do that one as well