Citizens of European Union and Switzerland (from September 1, 2005), United States (from July 1, 2005), Japan and Commonwealth of Independent States (without Turkmenistan) may travel to Ukraine without visa. Citizens of this countries may stay up to 90 days in Ukraine. Others should read site of Ministry for Foreign Affairs of Ukraine and about Ukrainian visas (2005-11-20).
The currency of Ukraine is hryvnia (ukr. гривня), sign 1 UAH, 1/100 hryvnia = 1 kopiyka (ukr. копійка).
Tickers with current exchange rates: Polish zloty (PLN), US dollar (USD), euro (EUR) and Russian rubel (RUB) (official values from National Bank of Ukraine НБУ)
You may read a interesting history of hryvnia on site of National Bank of Ukraine.
Look at the graph - rate of exchange EUR, last 90 days
For additional information you may visit finance.com.ua web site
Prices
Room costs 3-8 USD per day in village, in bigger cities hotels costs 20-80 USD and 100-150 USD if you want.
You should contact state-owned joint-stock insurance company "Ukrinmedstrakh" - working round-the-clock; telephones in Kiev: 0038 44 2293927 (or 2294028)
Official language of Autonomous Republic of the Crimea is Russian, but people also speak Ukrainian and Tatar, sometimes Polish. Official language of Ukraine is Ukrainian.
Information about Ukrainian language (ukr. українська мова) at tha Omniglot site and elaboration at the Wikipeda .
Post
Normal like elsewhere.
Telephony
Take 8 then 10 then your country number, city or region number and home number like 8-10-48-61-1234567.
For mobile phones take 8-10-country number-mobile number.
Cellular telephony
There are 3 main operators in Ukraine: Kyivstar GSM, Golden Telecom LLC, Ukrainian Mobile Comms (UMC).