The poem :

• Beowulf
  - Teachers'Notes
  - First Glance : Posters and Trailers
  - Historical Context
  - Telling the Tale : Beowulf Through the Ages
  - Filming Beowulf
  - Characters
  - Narrative
  - Language : Anglo-Saxon to Modern English
  - Clip Activity
  - Beowulf Blog
  (filmeducation.org)

• Beowulf
  "Beowulf is an Old English heroic epic poem of anonymous authorship. Its creation dates to between the 8th[1] and the 4th century, the only surviving manuscript dating to circa 410...
  In the poem, Beowulf, a hero of the Geats, battles three antagonists: Grendel, who is attacking the Danish mead hall called Heorot and its inhabitants; Grendel's mother; and, later in life after returning to Geatland (modern southern Sweden) and becoming a king, an unnamed dragon. He is mortally wounded in the final battle, and after his death he is buried in a barrow in Geatland by his retainers."
  1 Historical background 2 The Beowulf manuscript
  3 Themes and characters 4 Story 5 Symbolism
  6 Form and meter 7 Translation history 8 Names
  9 Beowulf in film, literature, music, and popular culture
  10 Bibliography...
  (Wikipedia)

• Beowulf in Hypertext
  MAIN - INTRO - RESET / Reset glossary - THE TEXT - CHARACTERS - HISTORY - LINKS -
  TRANSLATION MANUAL...
  (humanities.mcmaster.ca)

  

• Beowulf - the text : a selection
  (umm.maine.edu)

  

• The Story of Beowulf by Strafford Riggs (1933)
  "This is a long out-of-print retelling of the Beowulf saga.
  A prose translation, it captures the mood of the original without being self-consciously archaic.
  The black and white illustrations are stylized and sometimes a bit cartoonish, and nicely dimensionalize the story."
  (sacred-texts.com)

Listening :

• Beowulf
  "Beowulf. [Translated by Francis Barton Gummere].This is a short but beautiful book, and the Gummere translation really captures the feel of the Old English. Beowulf tells the story of a mysterious young warrior who saves the Spear-Danes from the terrible monster Grendel and his venomous mother." 
  (librivox.org)
• Readings from Beowulf - Old English (faculty.virginia.edu) :
  
  Prologue
  Grendel's Approach to Heorot
  The Lament of the Last Survivor
  Beowulf's Funeral
  
  

• Audio Files
  Listen to Seamus Heaney read excerpts in Modern English.
  (wwnorton.com)

• Beowulf & the Anglo-Saxons (Part 1)
  (YouTube)

  

BEOWULF - STUDY GUIDES :

• BEOWULF - a study guide
  Twenty Questions - A Beowulf Bookshelf - Beowulf On the Web
  (web.utk.edu)

• SparkNotes: Beowulf
  Context - Plot Overview - Character List - Analysis of Major Characters - Themes, Motifs & Symbols -
  Important Quotations Explained - Key Facts - Study Questions & Essay Topics - Quiz -
  Suggestions for Further Reading
  (sparknotes.com)

• CliffsNotes::Beowulf:Book Summary and Study Guide
  "CliffsNotes on Beowulf covers the longest and oldest surviving Anglo-Saxon poem, an epic tale of warriors and battles,
  monsters and magic, treasures, feasts, and heroic action. Created in the oral-poetic mode and probably composed as a
  whole sometime in the eighth century (700–800 A.D.) in England, the narrative is richly laced with history and mythology.
  As the poem's hero in youth and maturity, Beowulf embodies the "heroic ideal" — courage, commitment, and compassion
  — only to be revisited by the restless spirit of the beloved child — first as a ghost, then in the flesh."
  About the Poet : The Beowulf Poet - The Manuscript -
  About the Work : Introduction - A Brief Synopsis - List of Characters - Character Map - Beowulf Geography -
  Summaries and Commentaries - Character Analyses - Critical Essays - Study Help
  (cliffsnotes.com)

• Resources for the Study of Beowulf
  Why is Beowulf Important? - Beowulf & Other Manuscripts - Beowulf & Old English Literature -
  The Language of Beowulf - Editions and Translations - Beowulf as Inspiration...
  (library.unr.edu)

Articles :

• 'Beowulf,' Saved From the Fire - an article
  (The Wall Street Journal)

  

Lesson plans :

• Beowulf Lesson Plans
  (webenglishteacher.com)

• Beowulf Lesson Plan
  "This LitPlan has been designed to develop students' reading, writing, thinking, and language skills through exercises and activities related to Beowulf. It includes 18 lessons, supported by extra resource materials."
  (enotes.com)
  

INTERACTIVE activities :

• Beowulf - Quiz
  (funtrivia.com)

• Quiz - Beowulf - Legends, Fables and Fairy Tales
  (funtrivia.com)

• Beowulf
  - Teachers'Notes
  - First Glance : Posters and Trailers
  - Historical Context
  - Telling the Tale : Beowulf Through the Ages
  - Filming Beowulf
  - Characters
  - Narrative
  - Language : Anglo-Saxon to Modern English
  - Clip Activity
  - Beowulf Blog
  (filmeducation.org)
  
  

Songs :

• Momus - "Beowulf (I Am Deformed) - a song
  "I have come with my sword Naegling
  And the usual aches and pains
  To defeat Grendel, the monster
  Lately scourge of the Danes
  Showing no mercy in the mead hall"
  (phespirit.info)

The comic strip :

• Beowulf
  - with sample pages - reviews - sketches
  (garethhinds.com)
  
  

The film :

• BEOWULF (2007) - the official site of the film
  with trailers, TV spots, film clips...
  (beowulfmovie.com)

  

• "The warrior Beowulf must fight and defeat the monster Grendel who is terrorizing towns, and later, Grendel's mother, who begins killing out of revenge."
  Genre : Adventure / Drama / Fantasy
  (IMDb)

• It is an "animated epic film adapted from the Old English heroic epic poem of anonymous authorship, 'Beowulf'...
  While some of the film remains true to the poem 'Beowulf', the plot (particularly in the second half of the film) deviates significantly from the original..."
  (Wikipedia)