Moving from Sweden

Hi, I have some questions about potentially moving to Finland. I have dual swedish/finnish citizenship, am unemployed but can get a monthly income of around 1500 eur/month or more on art commissions if I start a business. If I have a business in Sweden I lose about 60-65% of this money to taxes, and Finland has a lower rate for small businesses. More expensive country though, but I’m still interested in moving there for some time. I always lived on bare minimum income and don’t really buy stuff unless necessary, and don’t need to live in city centre but preferably not too far off either. I speak some finnish.

Where do I look for apartments? I’m looking for something in the southern parts of the country.

How liveable is a small income like this?

If I want to study different secondary high school courses, where do I turn?