I used it exactly as you described - while commuting.

My primary preparation was live case prep with ex-consultants and other candidates, but I found LOMS useful for those times when I didn't have people to practice with.

Specifically I focused on just the "best" examples that were provided, skipping the other versions of the case (I was pressed for time). I did what you've mentioned i.e. try to be ahead of the case, but wasn't so successful with that because there was frequently a divergence in how I would have explored the case.

Overall, I found the cases unnecessarily detailed/tedious compared to the 25mins used for the cases on the interviews I did. So I simply listened and tried to be critical about the answers, concentrating on what I would have missed as well as how to speed up the process of arriving at the answers without sacrificing too much breadth.

Hi,

I recommend to reread the book and listen to LOMS every 15 cases. Every time, having more experience, you’ll be finding something new in these materials. Think on how would you do the previous cases differently. Reflection on you previous cases is the key to the successful preparation.

Also, it helps to see the structures that he provides and structure the whole case yourself.

Best