Hey there @Jason Chan and welcome! I hope your quest for a California RE license works out well.
So you have wealthy uncles - do any of them happen to have a real estate broker license? They might let you put your license under their shingle rent-free. :v
Each brokerage varies with regard to how they make their nut from real estate agents. But do keep this in mind, especially in California: a productive agent is worth his weight in gold to a broker. While you are doing your schooling for licensure, get to know brokers. And when you are interviewing, keep yourself in the driver's seat. Be very choosy about who you decide to run with.
My general advice to a new agent choosing a broker is to go with either a small boutique firm, or a large corporate one - each depending on your needs and taste. Small brokers will be able to give you individualized attention, while large firms have substantial training programs as well as brand recognition. In each case, ask plenty of questions and make sure you go in with a well-grounded understanding of their expectations, up to and including fees and commissions and what not.
Good luck to you!