As Azerbaijan was former Soviet Union country, most of citizens, especially elderly people speaks in Russian language. But still most of young generation also speaks in Russian. Because in Azerbaijan while going school our pupils have 2 selection. To study totally in Azerbaijani or in Russian.
Besides that, Azerbaijani language includes to the Turkish language group. So our language is very similar to Turkish language.
You can also speak English in Azerbaijan, but mostly with young generation.
Our people is very hospitable and they always trying to help someone who asks for it. So, do not hesitate to ask any question with body language or with three mentioned languages.