Tips for first time visitors:

In Kiev in the daytime anyone can walk anywhere without any danger. In the night (after 22:00) don't walk alone for long distances (take a taxi) and avoid drunk persons. Keep eye on your pockets and mobile phones in subway, public transport and markets with plenty of people.

Information about Kiev: http://www.ukrbiz.net/eng/kbd/cities/

Useful Phones: http://www.ukrbiz.net/eng/kbd/phones

International Phone Calls: http://www.ukrbiz.net/eng/kbd/utel/