Really Off Topic: Careers in Sports Betting

[BobbyLight]

What is the best way (I am not interested but still curious FWIW) on delving into a career in sports betting or "handicapping"?

How do these guys make a name for themselves?

Is there an entry level here?

Do they start in sports research positions (do they even have these?)?

Are there positions that gather stats that give ATS info, etc. for teams or do these guys do it for themselves?

A lot of questions here...any answered would be appreciated.