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HTML Exercises Many chapters in this tutorial end with an exercise where you can check your level of knowledge.

Python Exercises Many chapters in this tutorial end with an exercise where you can check your level of knowledge.

PHP Tutorial PHP is a server scripting language, and a powerful tool for making dynamic and interactive web pages.

We recommend reading this tutorial, in the sequence listed in the left menu. C++ is an object oriented language and some concepts may be new. Take breaks when needed, and go over the examples as …

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Learn JavaScript The Programming Language of the Web JavaScript is easy to learn. This tutorial covers everything from basic JavaScript up to the latest 2025 version. Start learning JavaScript now »

R Examples Learn by examples! This tutorial supplements all explanations with clarifying examples. See All R Examples

Python Classes/Objects Python is an object oriented programming language. Almost everything in Python is an object, with its properties and methods. A Class is like an object constructor, or a …

What You Will Learn This tutorial will give you a solid understanding of: What is XML? How does XML work? How can I use XML? What can I use XML for?