Rookie RE agent looking for the right broker/mentor

[Gingah Palmer]

Hello BP Community, I have spoken with a few brokers and have an employment offer from one. I have only recently began courses to obtain my RE license. Any advice on what to look out for before signing an employment contract as an independent contractor. This broker has been in business for 31 years, there only 3 reviews on her (all good) basically I don’t know the first thing about what look for in a broker/mentor which is what she is offering me before I even obtain my license. She has 3 other agents who are “under” her. Any information would be helpful. Thank you in advance!