I can’t give advice on doing a PhD so good luck with that but perhaps some survival tips in Finland.
Finns – good bunch, love being in the country and forest, like their booze, sauna, liqourice and berries. Generally considered quiet but most I’ve met love the opportunity to practise their high standard of english; I learnt about grammar in Finland.
Sauna – don’t be surprised if you get invited mid party to get out of your kecks and into a Sauna, all perfectly normal and it will help build relations!
Liquorice – They love liquorice. As a liquer (must try Salmiakki), ice cream, chewing gum and sweets. It’s quite staggering the range they have.
Finnish inventions – you’ll get kudos for knowing finland invented the following, Sauna, Xylitol (sweetener thats good for teeth), Benecol (cholesterol reducing product), GSM900/1800 Mobile phone network, etc.
Forest – most have summer houses in the country where they like to spend a lot of time. Thats where they can forage the forest floor for wild strawberries and blueberries. Luvly jubbly.