No, Armenia does not have any proven reserves of oil, natural gas or other fossil fuels.
Nagorno-Karabakh or Artsakh is a small mountainous region with majority Armenian population in South Caucasus bordering Armenia and Azerbaijan.
Yerevan is the capital of Armenia and the largest city in the country.
Armenia is in South Caucasus region of Eurasia, which is at the border of Western Asia and Eastern Europe.