I currently do not give a vote but just to enforce my impression on this series overall.
Previously I had studied with very scarce results the Hungarian one (still able to hold a basic conversation in Hungarian but nothing more than that) and the problem is how the course is structured. Assimil as I stated, works if you speak well (I do not say fluently) a language that is extremely near your target language. In this case, this Norwegian course is working perfectly for me already after 2 weeks, and the reason is very simple, I master German (C1) and have a good level of English, Now Norwegian is definitively a language very near to the above mentioned, so when I read for example: Jeg arbeider - I immediately associate to - Ich arbeite- in German and my brain memorize the patterns.
This Norwegian course is good but if you for example study it based on french in my opinion it won't work because I can assume that who is studying it in french does not speak German so he/she will find more difficulties to enter such language.
Overall I continue to think that Assimil works if you study a language near one that you can master or native. For example Dutch from English or Geerman; From English more or less any Germanic languages, From French you can study Italian, Spanish, Portugues, and Romanian.
I am strongly suspicious about non-European languages (I had my terrible experience with Hungarian and totally ruined my will to study it and let me quit Hungarian a language I liked but the approach ruined it)
I think Assimil should start to change a bit their approach (we are in 2022 Asimil!) and with the incredible economical resource they have, change their approach to non-European language because seriously studying Hindi from French makes really no sense.
If you speak English or German Norwegish ohne Muhe is a must. Tusen takk for lese og har det bra!
The pronunciation is thankfully written down and the sentences are closer to what you'd use in everyday smalltalk. A big plus compared to most language books, who either focus on colours, body parts, furniture, etc. (less frequently-used words) or on vocabulary related to travel (better, but limited circumstances).
Each lesson has a minimum of 15 new words and they usually don't repeat the words after that lesson. Makes it overly hard to memorize anything. Considering that you should theoretically be going through one lesson per day, that makes it tougher to see where you're going and whether you're progressing at all. Everything was getting mixed up in my mind since I could not remember even one word from one day to the next.
Do not get this book without the audio! I made the mistake of borrowing this book without the audio tracks and it was a nightmare trying to follow it. The book was good enough that I'm buying my own copy, but I'm making sure I'm getting the audio this time.