General Information:
EU-Community: https://www.daad.de/de/laenderinformationen/
EURES-Portal: https://eures.ec.europa.eu/index_de
World Fact Book: https://www.cia.gov/the-world-factbook/countries/greece/
Visa:
Visa types and requirements: https://www.mfa.gr/en/visas/
Entry and residence requirements:
Ministry of Foreign Affairs: http://www.mfa.gr/en/
Visa Information: https://www.learn4good.com/travel/greece_visa.htm
Social insurance:
IKA Social Insurance Institute – Greece: https://www.xo.gr/dir-az/I/IKA-Social-Insurance-Institute/?lang=en
Tax regulations:
Ministry of Economy and Finance: https://www.mindev.gov.gr/green-public-procurement/entities-responsible-for-the-implementation-of-gpp-national-action-plan/?lang=en
Accommodation:
Hotels and Hostels: https://www.hostelworld.com/st/hostels/europe/greece/
Country information:
Wikipedia: https://en.wikipedia.org/wiki/Greece
Kwintessential - Doing Business in Greece: https://archive.doingbusiness.org/en/data/exploreeconomies/greece
Greece Culture: https://www.greeka.com/greece-culture/
Further information:
Tourist information: http://www.gnto.gov.gr/
Visit Greece: http://www.visitgreece.gr/
Praktikumsagentur für Praktika auf Kreta: https://www.md-hellas.gr/?lang=de