1) buy from farmer who has forest, you find someone during the summer and make dealings also pay cash and tax evade
additional info: we had massive wood surpluses about 10 years ago when freezing rain killed large forest areas and next year was massive windstorm, it took years to just gather all the wood that was just lying around
2) not much since slovenia has 60% forest coverage and it's estimated 25% of all heating in slovenia is firewood already, and 40% of slovenia uses firewood partially (very few use firewood to heat water so I'm giving both figures)
3) we're alike then