As I am leaving for my first trip to Paris in 4 days, it was helpful to have a "Survival" guide. The information and tips are extremely useful and I'm sure I'll use all of them. The instructor's voice, however, left something to be desired as he sounds like he has a bad cold. Add to that, at the end of each "very short" lesson, too much time is wasted explaining the exact same instructions on reviewing what was just learned. Not sure who's decision is was to include this each and every time (It's identical!) but not only was it annoying, it took away from the lessons in my opinion.
I am very impressed with the Pimsleur language lessons. The format for listening and repeating at 30 minutes a day makes it easy to learn both grammar and vocabulary. Purchasing the lessons from Audible makes these lessons affordable as compared to purchaing anywhere else. I started by doing Lesson 1 on the first day as advised. Then I did Lesson 1 and 2 the second day and then Lessons 1,2, and 3 the third day and so on until I was convinced that I has a lesson totally learned and then I would stop doing it. If a missed a few days I would go back several lessons and do them all.