Tim Ferriss asked Warren Buffett how to invest $1 million. Park it in an index fund, 'forget it and get back to work' was his advice.

• Tim Ferriss asked Warren Buffett and Charlie Munger for advice in 2008, a resurfaced video shows.
• The author and podcaster asked how they would invest $1 million as 30-year-old amateurs.
• The billionaire investors said they would put the money in a low-cost index fund for the long run.

Tim Ferriss once asked Warren Buffett and Charlie Munger how they would invest $1 million as 30-year-old amateurs, a newly resurfaced video shows.