What are good laws to know if traveling to Sweden?

What are good laws to know if traveling to Sweden?
I plan to travel to Sweden at some point, (Was thinking about being a foreign exchange student there) and I was wondering if there are any laws that are helpful to know? I really don't want to get arrested for anything by accident just from not knowing that I am breaking the law, and I can't find any law books online :/
Other - Europe - 1 Answers
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don't say anything bad about ABBA

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