Taking the Agent route - go with the local or the national brokerage?

[Adolfo Cuellar]

I'm starting out with next to nothing and I need to make a living while I learn the rules of investing so I'm studying hard to be an agent and hang my license under either a local brokerage (Georgetown Realty) or the big bad Keller Williams. Any thoughts? Not only on who but on what activities I should focus on as an agent?

Thanks in advance!