I downloaded the wallet the other day, looks like they updated it since then.
What am I supposed to do, I saw some video about mining in the client with goldmine? I watched a video in Russian and didn't really get it, I'm supposed to have 1000 coins before I can mine?
The wallet has not changed since March 2017.
You cannot mine successfully from the client (CPU mining). You need a x11 asic to mine this coin, even then it is less profitable than other x11 coins.
You need 1000 coins to set-up a masternode (goldminenode). Currently, this will earn you $12 a year, so I wouldn't bother atm.
C.