Update index.md

Author: nygrenh

data/index.md

@@ -92,3 +92,5 @@ The release schedule for each part of the course can be seen below.
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+If have a Finnish social security number you can get official study credits from the Open University of University of Helsinki if you take an exam after the course. If you don't have a Finnish social security number you can get a certificate starting from June. Instructions for the certificate will appear here later.