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Getting Started with LESS
Less is a CSS pre-processor, meaning that it extends the CSS language, adding features that allow variables, mixins, functions and many other techniques that allow you to make CSS that is more maintainable, themable and extendable.
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Complete Beginner to JavaScript Developer
JavaScript is an object oriented dynamic language with types and operators, standard built-in objects, and methods. Its syntax comes from the Java and C languages, so many structures from those languages apply to JavaScript as well.