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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 …

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

HTML 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.

Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems. Start learning SQL now »

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

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

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).

Copy Values Tool Example values can be copied from the tutorial and into your spreadsheet, making it easy for you to tag along step-by-step: