I discovered a book by this name on the Barnes & Noble website. I'm strongly considering getting it with my next paycheck. It's approximately 600 words long, so although I wouldn't quite consider it to be the length of a college textbook, it should have a decent amount of information in there and be a worthwhile read.

Also, Ithkuil has a grammar book, too.

I'm considering buying both of these, reading them, and then lending them to my high school English teacher.

After those, I might end up buying a textbook on Esperanto.