hehe I must admit I haven't read it all thoroughly, but I have read my favourite chapters, of course having the english one next to me, so I could look up every word I didn't know (and there were many

). And yes, some words must be new, obviously, but this applies to any language.
There are words in Harry Potter that don't exist in English either, and obviously the translators in every language had to invent the equivalent. So it can't be that different for Latin.
Now though I want to start reading actual latin poetry in latin. When I finish the damn uni I will devote a year in improving my latin before applying for post grad. My first book to read will be Ovid's Tristia. Oh yeah!!!