At 25, Robbie Ferguson is the youngest person to make the list since it began in 1983. He and his brother James have a combined wealth of $1billion thanks to the success of their crypto business Immutable.  Background reading: The Rich Lister tipping a crypto rebound Australia’s youngest Rich Lister used to frustrate his parents by devoting a lot of time to video games. Now he co-owns a company worth $3.5 billion. Rich list tips: don’t study law (unless you really want to) Budding founders should hire slowly, don’t study law, don’t get caught in the hype, and read. How I Made It website here. Email us at [email protected] For more stories about success, subscribe to The Australian Financial Review here. See omnystudio.com/listener for privacy information.