W3Schools Online Web Tutorials
Learn to Code With the world's largest web developer site. Not Sure Where To Begin? HTML The language for building web pages Learn HTML Video Tutorial HTML Reference Get Certified
HTML Tutorial - W3Schools
HTML Exercises Many chapters in this tutorial end with an exercise where you can check your level of knowledge.
Free Web Development and Programming Tutorials - W3Schools
PHP Tutorial PHP is a server scripting language, and a powerful tool for making dynamic and interactive web pages.
Python Tutorial - W3Schools
Python Exercises Many chapters in this tutorial end with an exercise where you can check your level of knowledge.
JavaScript Tutorial - W3Schools
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 »
SQL Tutorial - W3Schools
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 »
Introduction to Programming - W3Schools
W3Schools offers free online tutorials, references and exercises in all the major languages of the web. Covering popular subjects like HTML, CSS, JavaScript, Python, SQL, Java, and many, many more.
C# Tutorial (C Sharp) - W3Schools
C# Exercises Many chapters in this tutorial end with an exercise where you can check your level of knowledge.
How To Make a Website - W3Schools
The box-sizing property allows us to include the padding and border in the box's total width (and height), making sure that the padding stays inside of the box and that it does not break. You can read more …
HTML Styles CSS - W3Schools
Internal - by using a <style> element in the <head> section External - by using a <link> element to link to an external CSS file The most common way to add CSS, is to keep the styles in external CSS files. …