Douglas Crockford is an American computer programmer and entrepreneur who is best known for his ongoing involvement in the development of the JavaScript language, for having
popularized the dataformat JSON (JavaScript Object Notation), and for developing various JavaScript related tools such as JSLint and JSMin. He is currently a senior JavaScript architect at PayPal, and is also a writer and speaker on JavaScript, JSON, and related web technologies.(source wikipedia)
This amazing guy and javascript guru offers us many tutorials on youtube about javascript, ajax and more. You got to have basic knowledge of javascript to understand him.
The book he proposes is “Javascript:The Definite Guide” by o’reilly publishing.
Press continue reading if to watch his introductory lesson to javascript.