In the past, you could stay visa-free for 90 days in Turkey, now it's 60, but I think if you leave the country and re-enter, you can stay visa-free for another 60 days. It was very easy to get a residence permit for the Russians, but this year it has become challenging. We got a residence permit for my wife 2 years ago and completed all the procedures in almost 1 day.I know the procedures about residence permits, I can help if you have any questions)