I briefly owned a copy of this book, but managed to give it to the teenage son of a colleague before the compulsion had had time to establish itself. This no doubt saved me at least 100 hours of pointless study, which I'm intending to devote to improving my grasp of irregular Quenya verbs.
I didn't think Klingon was as good as Tolkien's languages - it somehow lacked depth. But the list of handy phrases was fun. Looking around quickly just now on the Web, I was reminded of the ever-useful
Heghlu'meH QaQ jajvam ("Today is a good day to die"), and the dangerously insulting
Hab SoSlI' Quch ("Your mother has a smooth forehead"). You can find pronunciation guides
here, though I would take them with a pinch of salt - sounds to me like the speaker has a strong Earth accent.