Most agents prefer to associate with a broker, whose office is conveniently located, because of the need to commute. 

Typically, the broker will offer new agent and post-license training courses, which are often required by state law, to enable the agent to handle real estate transactions.  In addition, brokers hold once or twice weekly sales meetings and agent caravans, which help the new agent learn from fellow agents.  Once you sell your first property, you will have to submit all documentation to your broker for review and filing.  You will also use the sales office to copy and fax documents.