I am recently divorced and our children are staying with my ex-wife for the next 2 years. She moved to Berlin (studying) and that is where my children are now as well. We are all US citizens.
I'm moving to Berlin, too, so I can stay close to my children. I don't have a salaried work right now (a co-founder in a start-up in US) but I do have sufficient funds in my banking accounts. I do plan to study at a University in Berlin, but this is not for this year (need to learn the language first).
What type of visa would be best for my situation?