Interactive Online Programming Tutorials Thread

Anyone learning a new programming language has always had to deal with being overwhelmed by new concepts, programming paradigms and/or language semantics and syntax. Taking it all at once would shut down anyone's mind. However, this thread lists interactive tutorials that will teach you any language in bite sized morsels so that you don't feel overwhelmed and helps you get acquainted with the concepts of a language quickly before you feel you are ready to seriously pursue that language. If not, you could gauge how prepared you are to take on a new language.

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I will update more as I discover them or please suggest more in the thread.