You can receive financial support for your studies or internship if your parents do not have a higher income or you have been employed independently for a long time. This support is called BAföG.
Anyone who has become an heir must decide whether to accept or reject the inheritance. If you do not want to accept an inheritance, you can declare your rejection of the inheritance to a notary, have it certified and submit it to the probate court.
If you are a German citizen, you can apply for a passport. You will need a passport, especially if you want to travel to a country outside the European Union.