The Language Construction Kit is great from everything I've read. Yes her book is more on the history & pro/cons of various conlangs mixed with examples...etc.

The Language Construction Kit is great from everything I've read. Yes her book is more on the history & pro/cons of various conlangs mixed with examples...etc. It's not supposed to teach you Klingon, Lojban, Esperanto, and several others all in one book.