Business startup like transportation agent

Question posted by Dainius Pagojus, on behalf of DJP export in DE23

Business startup

I need a help with import / export. I want to do business, look for transport for companies which wants to export to EU including and Russia, I've got my database so I can be flexible for custumer, but I don't know how to do what. Can somebody explain step by step, what I need to do, what documents, what kind of company I have to create
I wanna become Cargo transportation agent.

Thanks alot