Hashrate lowly - 40kH/s.
I opened my wallet and pushed the button "Start mining". Is that enough? Do i need writing anything in console?
You don't need to do anything else, pushing "Start mining" is enough. Mining is a random process, it is normal to have hours without any mined block. We had discussion about this earlier in this thread.
Yep! I've done a lot of solo-mining under a lot of difficulty levels, from being almost all the network to 1% of it. It's those long blocks without and those quick 1-2-3's that tell you that it is truly random. It's kinda funny how randomness is generally misunderstood. I had four blocks in 40 minutes yesterday, followed by a void of two hours, followed by another of two hours.