I want to start a small business in Germany ( Berlin )

Hello guys,

Hope you are doing well. I need a help with one thing. I am student and i am thinking to start a small business in Berlin or Germany. Not like making small money but making a big business. I have thought some ideas like selling fashion jewelry or similar stuff.

Do you have any friends or someone who is selling stuff online or doing Ecommerce or Dropshipping?? Or if someone has a lead for some groups where i can learn this stuff? Or any youtuber who teach this specifically in Germany.? I really want to do something. I will work hard for it for sure. Your help will be really helpful.

Please help me with my thoughts. Thanks in advance.😊