But the office doesn't make or break the agent - the agent does. Real estate isn't rocket surgery. It's actually a very simple process that has opportunity for success or failure based on imagination, work ethic and skill. Your success or failure will depend on you - not your office.
Long and Foster is a great place to start, however if you attain a certain level of success you will find their commission split restricting. A team is a great way to start to gain experience and have a ready supply of customers to work with. But of course that comes with a split (usually 50/50) for all that support and advertising.
In the 15 years I've been in the business I've tried Long & Foster (wasn't my preferred working environment) an independent local broker (not enough support), Keller Williams (not my cup of tea) and RE/MAX which is my preferred brokerage. They provide great National advertising and come along with a reputation for having the best and most experienced agents. Re/Max agents sell more per agent than any other brokerage.
Wishing you all the best on your new endeavor!
As far as the team concept though there may be a few to watch out for a good team is perfect for a new agent. All companies promise support but a team will often give you well needed one on one support.
I've worked for Weichert, Coldwell Banker, Keller Williams and now Long and Foster; each has it's pluses & minuses, but for your first few years, I've found it's best to affiliate with a larger outfit (Drawback is on commission split levels) to get some momentum and experience under your belt. After that, you'll be seasoned enough to re-evaluate! Best of luck!