Dictionaries, Encyclopedias & Digital Libraries

• recnik
• eudict.com
• Ectaco English-Serbian Dictionary
• Wiki Introduction to Serbo-Croatian
  Information about the varieties of Serbo-Croatian languages
• Wiki Introduction to Standard Serbian
  Information about the Standard Serbian language

Grammar

• Handbook of Bosnian, Serbian, and Croatian
  PDF includes background, morphology, syntax
• Comparison of Standard Bosnian, Croatian, Montenegrin, and Serbian
  Outlines different variants and official registers of language
• Serbian: An Essential Grammar
  A PDF of a textbook available online

Vocabulary

• Linguanaut Serbian Essential Phrases
  Includes basic phrases, common expressions, idioms, and other vocabulary useful for chatting
• Learn Serbian Fast and Easy
  Basic words and useful phrases with helpful illustrations/images 
• Serbian "Survival Phrases" (PDF)
• Memrise
  Flashcard sets with basic and intermediate vocabulary

Reading & Writing

• Omniglot
  Information about the Serbian alphabet, pronunciation and language system

Listening & Speaking

• Forvo Pronunciation Dictionary
  Crowdsourced collection of words and their pronunciation by native speakers
• Serbian Radio Online

Online Course Materials

• Learn Serbian
  Blog with lessons, supplementary videos, and exercises
• Foreign Service Institute Serbo-Croatian course
  Links to downloadable text and audio files
• Serbianlessons.com
• Serbian Language and Culture Workshop
  Offers courses and programs online and through travel
• Learn Serbian with Loecsen
  Online lessons with audio
• L-lingo
  Online lessons with audio
• Serbian Audio Lessons
  Downloadable audio lessons
• Uni-Lang
  Serbian lessons for beginners
• Memrise course for Serbian
• Video course for learning Serbian
• Serbian video lessons

News & Media

• Blic
  Serbian newspaper
• B92 News
  Serbian newspaper in English and Serbian
• Serbian Online Newspapers
  Online newspapers, journals, magazines and other electronic publications

Arts, Films & Music

• Kinoeye
  An article on Belgrade's film school
• A Cultural History of Serbia
  Good introductory overview of Serbian history