I'm French living in the Netherlands and I learned:
- a kid is a human being and should be respected as an adult. They don't need to be the parents subordinate
- you can disagree without being angry
- my English and Dutch. I can now see all video/ film (tedx / universiteit van vlanderen) without any translation
- Most of the time, you don't need any medicine when you are sick. Sleep, sport and a balanced diet is all you need.
- French have the best food on the planet.
- when hosting, Dutch care more about the atmosphere than the food
- you can learn a language by watching the television (in France, the content is only in French)
Anecdote: they can put pineapple in a 'choucroute garnie'. The Italians version of pineapple on pizza ;)
The cultural shock in all greatness.