hello) i live in minsk so i can tell you some tips.
for first, i would like to ask if you have belarussian embassy in your country? if yes, better to make it there because you just bring documents and after around week receive it back with viza and pay around 60 euro. if to make viza in belarusian airport is the only possibility, so you need:
- passport (for sure)))
- 1 photo (35*45 mm)
- medical insurance (it is also possible to make in airport)
- invitation
and the price will be 180 euro, if you have belarussian embassy in your country and from 90 to 135 - if you don't.
also if you stay in belarus longer than 5 days, you need to make a registration (if you need some details about this, tell me)
and yes, to make all this procedure the first time is knotty but the second time you'll know everything))