Currency & Commodity Trading Internships

Hi,

throughout the years studying I developed an interest for currency and commodities. Especially, for trading. Now I am unsure whether to join a BB or a small shop. To figure that out I want to do an internship but I am still not sure where. Is there any list of small shops which offer internships in either commodities or currency trading?

I hope you guys can help me to find a right path for my future career. Thank you