Series exams

Hello I'm not sure if this is the right website for this question but heck it should be. My question is regarding becoming a broker what license is the most helpfull and why?

 

pretty sure there are many brokers here who would be able to share.

 

http://lmgtfy.com/

 

use to be series 7 (registered rep), required company sponsorship

http://www.finra.org/industry/qualification-exams

 

check series 3 too.