Born in Gothenburg, Sweden, Kjellberg originally pursued a degree in industrial economics and technology management at Chalmers University of Technology in Gothenburg. In 2010, during his time at the university, he registered a YouTube account under the name PewDiePie. The following year, he dropped out of Chalmers after losing interest in his degree field. After unsuccessfully applying for an apprenticeship with an advertising agency in Scandinavia, he then decided to focus on creating content for his YouTube channel. In order to fund his videos, Kjellberg sold prints of his Photoshop art and worked at a hot dog stand. He soon gathered a rapidly increasing online following, and in July 2012, his channel surpassed one million subscribers.