No school, internet helps a lot
I actually first started posting some shitty drawings here, on deviant art. People were supportive enough for my bad art that I then felt that I should actually do something that was worth the praise.
It was years before I had the courage to post on any of my social media accounts.
There so many tutorials on youtube, that if you start making it a habit to practice you'll be working alongside people that actually went to school. Plus -our- art schools aren't really top notch. They have big lack in the digital art department. But that's only from my personal experience.