Tutorials

Most of the information on this site is helpful. See the Greasemonkey Manual for starters.

Greasemonkey tutorials

• Dive into Greasemonkey
  Note: Much of the information in DiG is out of date.
• Greasemonkey hacks (as a wiki)
  
  • includes Avoid Common Pitfalls in Greasemonkey
    Much more up-to-date than DiG above.

JavaScript tutorials

• w3schools' JavaScript Tutorial
  Largely out of date, but a good place for a beginner to start.
• tiztag's JavaScript Tutorial
• JavaScript on QuirksMode
• The JavaScript Programming Language (part 1, 2, 3, 4) by Douglas Crockford
  A set of videos of a wonderful lecture by this JavaScript guru.
• JavaScript Closures for Dummies
• JavaScript Closures

JavaScript references

Once familiar with the language, one may notice there are many available features in JavaScript which are initially hard to remember.

• w3schools JS reference
• MDC, an extensive wiki from Mozilla which details JavaScript and Firefox-unique features alike
• Gecko DOM Reference

JavaScript Books

• JavaScript: The Definitive Guide is well regarded
• For a modern introduction to JavaScript, check out John Resig's Pro JavaScript Techniques