Not worth the money. Spend a little extra and get the Pimsleur Croatian programs. They take you from zero to marginally competent whereas this one is essentially worthless. This is not an "osmosis" language - unless you are already proficient in another Slavic language - so this short silly lesson is worthless for the non-speaker (not enough to help with anything) and dually worthless for someone who has some Croatian/Bosnian/Serbian (too elementary to really teach you anything new). I highly suggest using the Pimsleur audio programs and instead of waiting for the flight, to perhaps start with the Pimsleur program perhaps one hour a day in the weeks before you go. Pimsleur is a great audio program. It doesn't lay out grammar rules, but it does work with your pronunciation, memorization, and useful daily vocab. I used it for Greek and Croatian at different times - taking one lesson each day during my morning exercise - and find them really useful. This "in-flight Croatian" program however...USELESS!