At the age of 10, he developed an interest in computing while using the Commodore VIC-20.He learned computer programming using a manual and, by age 12, sold the court of a BASIC-based video game he created called Blastar to PC and office Technology magazine for approximately $500.An awkward and introverted child, Musk was bullied throughout his childhood and once hospitalised after a group of boys threw him down a flight of stairs.