Russia is going to recognize bitcoin,so is it a potential and big market?How can I know more about Russia's market?
Well, going to the Russian sub thread?
Russia has wmoney and that network was really large last time I've used with a lot of uses and a lot (really lot) of locations where you can pay with it.
But in terms of how big it is in usd value, ...meh.
At an average income of 500 euro per month, I don't see that many people jumping into the btc wagon.
The only attractive part of bitcoin might be taxa evasion in russia, but there evasion is done by other means;).
Well, I can tell you as a person, who lives not far from Russia and has a lot of friends there, that Russia is quite far from adopting bitcoins. Just considering that it is a big country with approximately population numbers 147 millions there are people that know about bitcoin and even started using it a couple of years ago. But MOSTLY Russians are not familiar with BTC. I guess it now depends on government. And if the government accepts bitcoins, for sure it will become popular, commonly used and, I think, will influence bitcoin price 
It doesn't matter if they are 147 millions if their income is that of 10 millions dutch.