In Azerbaijan only one city, Baku, there are metro stations. Baku is a big city, with about 3 million of the population living here. The transportation system is developing year by year. Other cities in Azerbaijan are not so crowded. That`s why only in Baku we can see the metro system.
Metro prices are eligible here. You need to pay for entrance 0.30 manat and the distance of places does not matter how far or near. The payment is just for the entrance.
In our "How to use public transport in Baku" blog post we explained about overall transportation system of Baku.
So, for using the Baku metro you need to take temporary or permanent Baku Cards. You can take them from kiosks which are located at every metro station. It is operating in 3 languages: Azerbaijani, Russian and English. So choose the appropriate language for you and select what you need. For a permanent card, you need to pay an additional 2 manat per card. But for a temporary one, you do not need to pay additional. You will pay just for entrances.
Here is the map of the Baku Metro
As a tourist, mainly you will need a red line. The last station which is "İçərişəhər" is the place where Old City is located. The previous station of "İçərişəhər" is Sahil. Sahil is near Nizami street or Tarqovy and National Boulevard. 28 May station is the main city hub. There are locating Railway Stations to other cities, 28 Mall and there you can change the line to the green line.
Baku Metro operates both in Azerbaijani and English. So all sign boards are on both language and speaker too.
For any assistance do not hesitate to ask a question to locals. Maybe they will not understand your language. But just tell them the name of the location where you wanna go, or show them the map and they will be happy to assist you.
Finally, you can check these links to get additional information about Baku Metro:
How to popup the balance of BakuCard - http://www.metro.gov.az/en/howtouse
Information about the schedule of Baku Metro - http://www.metro.gov.az/en/schedule