1. Read the newspaper every day. Be knowledgeable on all subjects, not just the economy.
2. Dress the part. Just because you are an intern doesn't mean you don't have to wear a suit to work. You will be dealing with important clients and your superiors.
3. Double check your work. You don't want to be the reason the project estimate was $120,000 instead of $12,000.
4. Be a sponge. Learn all you can about the financial industry. Chat up clients and vendors, and read everything you can.
Now that you know these tips, apply for these business internships!