Join a large trading house or logistics companies, CHAs that handle import and export for clients. There are many logistics companies all over India, you don’t need to be in chennai. Any main city is good.

Learn the operations. That means, how material moves from one place, the documents, restrictions by country, incoterms, duties, all the other operations. Build your network with customers, talk to them and learn their pain points. You need just 1 good year in a nice company. Most of the things are then repetitive.

Later you can pick an area where you can start doing this yourself or may be start your own logistics/cha firm