Visa:
Visa types and requirements: https://www.migrationsverket.se/English/Private-individuals/Visiting-Sweden.html
Entry and residence requirements:
Ministry of Foreign Affairs: https://www.government.se/
European Commission: https://eures.ec.europa.eu/living-and-working/living-and-working-conditions_en
Insurance:
Health care in Sweden: https://sweden.se/life/society/healthcare-in-sweden
Social insurance:
Social Insurance in Sweden: https://www.forsakringskassan.se/privatperson
Health:
Fit for Travel: https://www.fit-for-travel.de/reiseziel/schweden/
Accommodation:
Apartments for rent: https://www.gabinohome.com/en/sweden.html
Private to private offers: http://www.blocket.se/
Bostadsdeal.se: https://www.bostadsdeal.se/
Housingtarget: https://www.housingtarget.com/
Country information:
Wikipedia: https://en.wikipedia.org/wiki/Sweden
Culture Crossing: http://guide.culturecrossing.net/basics_business_student.php?id=197
Further information:
Tourist information: https://www.lonelyplanet.com/sweden
Visit Sweden: https://visitsweden.com/