This is a fantastic product, and one of the best ways to really get an early handle on grammar, and an outstanding way to practice speaking and pronounciation at any level. However, please do not do not get disapointed when you don't speak perfect French in 8 hours. This will give you basic tools to build on, but then you need to spend some time in a French country, or take several years of university classes.
When considering the investment in a foriegn language, consider that it may take 1000 hours (for an extremely easy language like French) to feel very comfortable in the language. That's one hour of serious study each day for three years. Or you can go sit in a Parisian cafe and talk to people who are willing to tutor you (extremely hard to find without some pretty good skills to start with) and you might get there in a few months.
I like this product because it's the very best available for naturally teaching you the grammar basics and for helping you to build the core vocabulary (stuff like and, but, or, many, few, the, a, an, whowhatwhenwherewhy), the core language structure (negation, word order), and it's outstanding for it's ability to teach language sounds...
A side note...be willing to sleep between lesson times. Something happens when you sleep, and you'll be better at it by the next lesson. That's why it's important to do this every single day, so that you have the maximum number of study-sleep cycles.