It is an easy to use book with some grammatical markers and the famous 100 verbs.
However 100 verbs that's not much even for beginners / medium like me because when I do my homework Russian, I use a lot of verbs that do not appear in this book or they are ordinary verbs, common ... nothing very erudite. So I find myself snooping on the net in search of conjugating a verb that does not appear in this book.
In summary, it's worth it to buy it, but only for beginners ... then you have to go to a higher level (not available in French ... Anglophone literature on Russian verbs are available on amazon.com ) or directly a Russian book.
I still recommend it as kind of "base" to his vocabulary of verbs.