Azerbaijan Languages

Description
Azerbaijani is the only official language in Azerbaijan and is spoken by the majority of its population, however, a number of minority languages also exist in the country. The largest minority languages are:
 * Lezgian - Spoken in Northern Azerbaijan
 * Talysh - Spoken in Southern Azerbaijan
 * Avar - Spoken North-western Azerbaijan
 * Russian - A lingua franca of Azerbaijan (a language that is adopted as a common language between speakers whose native languages are different)
 * Tat - An endangered language

Word List(s)
Azerbaijani
 * Useful phrases in Azerbaijani (Omniglot)
 * Azerbaijani Phrasebook (Wikitravel)

Lezgian or Lezgi
 * Useful phrases in Lezgi (Omniglot)

Talysh

Avar
 * Basic Avar Phrasebook (Wiktionary)

Russian
 * Useful phrases in Russian (Omniglot)
 * Russian Genealogical Word List

Tat

Alphabet and Pronunciation
Azerbaijani
 * Azerbaijani Alphabet and Pronunciation (Omniglot)

Lezgian or Lezgi
 * Lezgi Alphabet and Pronunciation (Omniglot)

Talysh
 * Talysh Alphabet and Pronunciation (Omniglot)

Avar
 * Avar Alphabet and Pronunciation (Omniglot)

Russian
 * Russian Alphabet and Pronunciation (Omniglot)
 * Russian Alphabet and Pronunciation (Wikipedia)

Tat
 * Tat Alphabet and Pronunciation (Omniglot)
 * Tat Latin Alphabet and Pronunciation (Omniglot)

Language Aids and Dictionaries
Azerbaijani
 * Azerbaijani to English Dictionary (Glosbe)

Lezgian or Lezgi
 * Lezghian to English Dictionary (Glosbe)

Talysh
 * Talysh to English Dictionary (Glosbe)

Avar
 * Avaric to English Dictionary (Glosbe)

Russian
 * Russian to English Dictionary (Glosbe)
 * Russian Dictionary (Lexilogos)
 * 11 Tips on How to Learn Russian Quickly and Effectively (Journal of Nomads)
 * [https://www.duolingo.com/course/ru/en/Learn-Russian Learn Russian (Duolingo)
 * Russian Letter Writing Guide

Tat
 * Judeo-Tat to English Dictionary (Glosbe)
 * The Sound of the Tat language-Numbers, Greetings, Words (YouTube)
 * On the Caucasian Persian (Tat) Lexical Substratum (JSTOR)
 * Tats (Encyclopedia.com)
 * Judeo-Tat / Juhuri (Jewish Languages)

Additional Resources

 * Caucasian languages (Britannica)