There are some amazing conferences/interviews that are out there... just take these for example:
Business advice from billionaire Richard Branson, Chairman of the Virgin Companies.
Seth Godin: Sliced bread and other marketing delights
Learn to write copy that sells with Joe Sugarman
The point is, all the information in the world is out there for you to discover on your own... by watching and learning from people who you look up to as your "mentor"... you don't have to know them personally... (Just take this forum for example... there are thousands of 'mentors' that can help you on your journey.)
Just make sure you take full advantage of your gained knowledge by putting it into action.
Our mentors would hate to see us "Not Using" the knowledge they have so graciously shared with us...
P.S. Feel Free to add your favorite conference/interview videos from the best of the best...