Only 2 1/2 weeks into the course and am highly impressed how much you can learn (and retain) in such a short time! I am a native English speaker and have already had a chance to try out my Portuguese on some Brazilians. They were really impressed with my pronunciation, which is maybe the biggest challenge of a native English speaker. You only do one, half-hour session a day, which is great. They ask you to repeat the words aloud, which is a definite necessity, but I often listen (without repeating) a second time to be sure I've remembered everything. I took a Spanish class previously, and I can honestly say I've probably got more from these tapes already (2 1/2 weeks) than I did in an entire 3-month class. I was a bit skeptical when they said it was designed 'scientifically' so retention is maximized. I now definitely believe this, as my memory is average at best. Anyway, if you are looking to learn Brazilian Portuguese and are a complete beginner like I was then look no further!