Are YouTubers artists? Daniel Middleton's channel took off while he worked at a supermarket. Now he is one of the most successful people on social media.
The shy pupil who took the internet by storm
Minecraft goldmine: DanTDM's videos have had more than 18.5 billion views. Glossary
Incredible - Amazing or unbelievable.
University - When people leave school, they can go to university to study more and get a degree.
Graphic novel - A type of book containing art and words. A long comic.
Depression - Low mood that affects someone's daily life, and can last for weeks or months.