In Estonia you pay 0% Tax no matter how and what you trade. Period.
You pay taxes (20%) only when you will get the money out of the business ie. into your pockets.
So this is the place where you can accumulate your equity for years and pay one-time tax only when retiring.
Then of course if you have to pay some dividends for your living expences you can do it just paying 20% taxes. This is valid only for the first 3 years then the rate will get lowered to 14%. Remember these are peanuts while your main equity is growing in the business.
It makes a big difference if you can compound profits without paying taxes annually. Use your calculator and see the Big difference.
Estonia infrastructure is high and quite cheap to live in. The country belongs to EU so you can expect it as stable as other northern Scandinavian countries like Sweden, Norway and Finland. English is not an official language but the english is quite well supported. No need to learn Estonian

For the official papers (tax reporting, accounting, immigration etc.) you will need some normal advice service which can be easily found in english and is not very expensive.