1. http://www.shakespeares-sonnets.com/sonnet/127
This site includes all Shakespeare’s sonnets, each one with a descriptive commentary attached, explaining possible doubts concerning lexis, rhythm, problems of interpretation, etc. We can also find an analysis of some works by other authors of this period.

2. http://www.shakespearestudyguide.com/meter.html#top
A study guide about feet and metre in English poetry, including detailed descriptions, types and examples.

3. http://www.cranberrydesigns.com/poetry/sonnet/history.htm
This site provides a definition of some poetry-related concepts: types of sonnet structures, rhythm and stress, etc. It includes a final section with a questionnaire to test your knowledge, and even encourages you to write your own sonnets, by giving some clues and tips about their process of composition.

4. http://en.wikipedia.org/wiki/Book:Shakespeare%27s_Sonnets
A link to an extensive collection of works by Shakespeare, mainly of his sonnets. It includes an analysis of each of the poems, as well as further references both on the author and on his prolific career.

5. http://shakespeare.palomar.edu/contemporaries.htm
This website contains a complete list of contemporary authors and historical characters, with references to their writings and critical editions, as well as to their biographies.

6. http://shakespeareobra.wordpress.com/
Antonio Tausiet’s website (in Spanish) includes detailed comments and criticism on Shakespeare’s plays and poetry as well as interesting information about films based on his life and works.

7. http://www.shakespeare.org.uk/explore-shakespeare/students-and-enthusiasts/engage/tea-room/
shakespeare-039-s-life-and-times.html
The Shakespeare Birthplace Trust’s website includes comprehensive contents about Shakespeare's life and times and a useful ‘frequently asked questions’ page created by the trust’s volunteers.

8. http://www.handprint.com/SC/SHK/sonnets.html
A summary of Shakespeare’s sonnet cycle with a clear commentary on the narrative patterns and poem groupings. The page also includes references to ‘readings and misreadings’ of the sonnets over time.

9. http://absoluteshakespeare.com/
The Absolute Shakespeare site is an essential resource for William Shakespeare's plays, sonnets, poems, quotes and biography. Here, you can also find extensive information about the legendary Globe Theatre.

10. http://www.nosweatshakespeare.com/sonnets/
This site contains a compilation of Shakespeare’s sonnets in modern English to aid interpretation and comprehension. Useful contextual information about the inspiration for the sonnets is also available.