content: Indispensable. It's THE reference for verbs and verbal grammar. I much prefer it to "501 Verbs" because (1) it concisely provides each unique conjugation pattern once and only once (which makes it easier to learn the pattern), and (2) irregular forms are highlighted in red.If you haven't finished at least one year of college French (maybe two) I'd suggest that you start with the English version. There's a tremendous amount of information in the grammer section that you really won't understand well until you speak pretty decent French. What I'd really like to suggest is that you buy both versions, Use the English book until you are comfortable with the one in French and then pass it on to some budding Francophile. Bonne chance!