[Well, no, Herbert doesn't really know his dad, he just lives with his mum. He does, however, have a nutty wizard uncle who gets it, and that's something! If only he got to see him for more than a few weeks in the summer ... ]

That is an excellent text, thank you very much! Very useful, and he includes theory and usage that other authors so short-sightedly leave out because of the 'implications'. [making annoyed air quotes - what he actually means to say is 'Thank you, Eriq, you are a good friend,' but probably some reading between the lines is going to be necessary here.] I used it for two essays and some personal research last year.