I came across this book after learning English grammar on my teacher training course, and realising that learning the grammar is essential to learning a new language. So I tried a couple of books to that end, including Grammaire en clair, which is great in it's own way....but this! If you don't mind doing loads of writing to practice all the forms then this could be for you. It'll teach you a point and then give you a lot of practice to drill it into you. Exactly what I want, that's how I learn best anyway. My French has improved massively since starting this book, and I don't think i'm a quarter of the way through. Obviously, you'll need to supplement it with other things to break up the potential for tedium, but a useful tool nonetheless.