Dear Hana123,
If you want to do the internship while staying a student at your home university you can apply directly at the faculty of medicine of Universität Hamburg. At the time you start the internship, you have to be in the last year of your studies in Turkey (6th year). You need German language skills at the level B2 - so if you just started learning German, you will probably need at least one more year to get to that level, depending on the amount of time you can spend improving your skills. The documents you will need for an application are the following:
Application Form (the form can be found on the web page linked to below)
Written Approval of your faculty in Turkey
Motivation Letter
CV
Transcript of Records
Certificate proving your German language skills (B2)
Copy of your passport or ID
Detailed information on how to apply is provided by the faculty of medicine:
https://www.uke.de/studium-lehre/intern ... index.html The part of the page relevant for you is the section "Praktisches Jahr". Since the page is in German, you probably won't understand everything on it if your German language skills are not that advanced yet. So if you have further questions and need someone to translate, just ask here again. But since the application process may change during the time until you can apply, it is probably not worth it to bother much with those details right now.
Best regards,
Birte Schelling