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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.

Learning by Examples In this tutorial, we will show you Bash commands like this:

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 …

Click on the "Run example" button to see how it works. We recommend reading this tutorial, in the sequence listed in the left menu.

The W3Schools HTML Tutorial is comprehensive and beginner-friendly. It will give you a fundamental knowledge of HTML. It is designed for beginners and requires no prior …

This tutorial follows Bootstrap 3, which was released in 2013. However, we also cover newer versions; Bootstrap 4 (released 2018) and Bootstrap 5 (released 2021).

XPath Standard Functions XPath includes over 200 built-in functions. There are functions for string values, numeric values, booleans, date and time comparison, node manipulation, …