Insurance Broker vs. Agent

I'm an Independent Insurance Agent in GA and want to know how do you become a Broker?

I've read so many different things for example:

-There is no real difference between agent/broker/producer
-To be a broker you must have been an agent first depending on what state you live in
-Brokers don't have contracts with Insurance Companies

Is it better to be a Broker than an independent agent because you can negotiate the price for clients?

What else is required to become a broker besides a surety bond?

Thanks.