Welcome to the Wefugees Community and thank you for reaching out to us.
We discussed a very similar question a few days ago on this platform. For up to 90 days you can travel to other EU countries without any visa. If you want to make an Ausbildung (vocational training) or study in Germany, for instance, you need to apply for a respective visa and residence permit. You may check the "Make it in Germany" website as well. Which option will be the best for you individually, is a bit difficult to say without knowing your background though.
I hope this helps and don't hesitate to get back to us with any further questions.
All the best,