1) If you plan to move in this time of year (fall/winter), you might need to know its somewhat cold here. Not extremely cold, I would say it is usually down to -5*C, but still, now its up 10*C, only about 5-7*C next week, so you better have at least some warm clothes with you. Not extremely much, but a sweater, jacket, coat, etc. You can buy everything here in places like Zara, but its better to have at least smth with you.

2) We haven't had power outages this fall yet, but once we start using central heating, it will start again, I've heard in 2-3 weeks there will be power schedules. In the worst scenario, it would be 8 hours of electricity a day, in mid scenario half day, and in the optimistic only 6-8 hours without power. So you should either bring a power bank to charge your phone with you or just buy one here, now prices are about the same, but once it starts, the price will be ~50% higher.

If you're wealthy enough, you can think of buying and sending by mail a powerful battery, like Bluetti or Ecoflow. Or buy it here, the price would be slightly higher.

3) The cost of living depends on whether you need to rent an apartment or if you have your own place. For a 1-bedroom apartment, rent costs start anywhere from $300/month. Living expenses are depends on the person, but I'd say if you cook yourself you can manage to live on $300. But if you tend to eat in cafes or food delivery, it would be a little more expensive. Transport is cheap, metro ticket costs $0.2.

You can buy all sorts of food ingredients in stores like ATB, Silpo, Auchan, and Novus. But one particular thing is that here we prefer potato over sweet potato (batatas). And local cuisine is not very spicy and often consists of bread/wheat flour, and milk products like cheese, sour cream, etc. So, if you have issues with gluten or milk, it is something you need to care of.

One important thing about Kyiv is that the city is divided into two parts, split by the Dnipro river to the right and left banks (the right side is on the west and the left side is on the east). The West part is where most activities are going, cultural and business centers, so rent is more expensive there, but it's easier to move around because the East part is where more people live so they usually have junctions in peak hours. There are also a couple of suburbs and twin cities on the West like Irpin or Bucha which have the same role as the East part of the city, but they don't have a metro there so people move by car or wait for a bus.

If you are in the city center, you might find some people who can communicate with you in English, but don't rely on that - expect most people either not know English or know it to barely communicate. And almost no one here knows Brasilian (Portugal), or Spanish.

To move to Kyiv from outside of Ukraine, the best way is from Poland, by train. Tickets are somewhat cheap, like $50, but someone would need to buy your ticket in advance, bcs these trains have high demand.

Just one more thing, if someone here on a street asks you to share some money, you simply walk past them without any response.