GeeksforGeeks Online Tutorials - FREE!
Last Updated :
11 Apr, 2025
Welcome to GeeksforGeeks Online Tutorials! Here, we offer a huge selection of free online tutorials for everyone, no matter your experience level. This tutorials library is a comprehensive hub where you can easily find and access a variety of tutorials including web tutorials, data structures and algorithms, programming languages, computer science subjects, along with tutorial content for school students exam preparation and more!
Here is the comprehensive list of free online tutorials:
Whether you're a beginner or an experienced professional, a college student or a school student, preparing for tech interviews or government exams - our collection of free tutorials offers something for everyone. These online tutorials allow you to learn at your own pace without any barriers.
Data Structures and Algorithm
Data Structures and Algorithms (DSA) provide techniques to organize data and solve computational problems with minimal time and space complexity. Here are in-depth DSA tutorials covering arrays, trees, graphs, sorting, dynamic programming, and more to help you build strong DSA fundamentals:
Programming Languages
From fintech and AI startups to top MNCs, mastering these programming languages lays the foundation for learning any tech stack. These tutorials cover everything from basic syntax to advanced topics, helping you become proficient in the most in-demand languages across industries:
Web Technology
Here are all the essential web technologies you need to build modern, responsive, and dynamic websites. From HTML, CSS, and JavaScript to frameworks like React, Angular, and backend tools like Node.js and Django—these tutorials cover both frontend and backend development in depth:
Python Technologies
Here are all the Python-based technologies and frameworks used across web development, data science, AI, automation, and scripting. These tutorials cover everything from core Python to advanced tools like Django, Flask, Pandas, NumPy, TensorFlow, and more—helping you build scalable and intelligent applications:
Data Science and Machine Learning
Here are all the key concepts, tools, and frameworks you need to excel in Data Science and Machine Learning.:
System Design Tutorial
Here are all the essential topics to help you master system design for scalable and high-performance applications. These tutorials cover design principles, architecture patterns, load balancing, caching, database sharding, CAP theorem, and real-world system design case studies used in top tech companies:
DevOps Tutorial
Here are all the essential DevOps tools, practices, and cloud platforms you need to streamline development and operations. With these tutorials, learn version control with Git, complete Linux commands, CI/CD pipelines and cloud services like AWS, Azure, and Google Cloud—helping you build, deploy, and manage applications at scale:
School [Class 6 to 12]
Here are subject-wise resources for students from Class 6 to 12, designed to strengthen concepts, improve academic performance, and support exam preparation with simplified explanations and solved examples:
No matter what you're aiming to learn—whether it's preparing for coding interviews, mastering programming languages, or building strong fundamentals—these are complete tutorials designed to give you in-depth knowledge and real, industry-level experience. Learn at your own pace, revisit topics anytime, and gain the skills you need to succeed. Start exploring, keep learning, and take full advantage of everything GeeksforGeeks offers—completely free
Similar Reads
Kali Linux Tutorial
Kali Linux is a specialized open-source operating system designed for cybersecurity, penetration testing, and ethical hacking. Built on Debian, it comes with pre-installed security tools for digital forensics, vulnerability assessment, and network analysis. Like other Linux distributions, it shares
15+ min read
Solidity Tutorial
Solidity tutorial is designed for those who want to learn Solidity programming language and for experienced Solidity developers looking to gain a deeper understanding of the language. The following Solidity tutorial explains the basic and advanced concepts of Solidity programming language and provid
6 min read
Online Code Formatter
Code formatter and code beautifier tools are essential tools for improving the overall look and maintainability of source code. These tools can automatically reformat code to comply with consistent styling guidelines such as indentation, spacing, and alignment, making code easier to read and underst
3 min read
Linux/Unix Tutorial
Linux is a widely-used open-source operating system, similar to Windows, Mac, and Android. It shares similarities with Unix, another operating system known for its commercial use. Unix and Linux have comparable components, including the kernel, shell, and programs. Many commands in Unix and Linux ex
12 min read
jQuery Tutorial
jQuery is a lightweight JavaScript library that simplifies the HTML DOM manipulating, event handling, and creating dynamic web experiences. The main purpose of jQuery is to simplify the usage of JavaScript on websites. jQuery achieves this by providing concise, single-line methods for complex JavaSc
9 min read
Programming Tutorial | Introduction, Basic Concepts, Getting started, Problems
This comprehensive guide of Programming Tutorialor Coding Tutorial provides an introduction to programming, covering basic concepts, setting up your development environment, and common beginner problems. Learn about variables, data types, control flow statements, functions, and how to write your fir
15+ min read
Java Tutorial
Java is a high-level, object-oriented programming language used to build applications across platforms—from web and mobile apps to enterprise software. It is known for its Write Once, Run Anywhere capability, meaning code written in Java can run on any device that supports the Java Virtual Machine (
11 min read
Learn Java - A Beginners Guide for 2024
If you are new to the world of coding and want to start your coding journey with Java, then this learn Java a beginners guide gives you a complete overview of how to start Java programming. Java is among the most popular and widely used programming languages and platforms. A platform is an environme
10 min read
Python Crash Course
If you are aware of programming languages and ready to unlock the power of Python, enter the world of programming with this free Python crash course. This crash course on Python is designed for beginners to master Python's fundamentals in record time! Experienced Python developers developed this fre
7 min read
CSS Examples
CSS Examples showcase various styling techniques for HTML elements. They display properties, selectors, and functions that enhance design and creativity. This section offers categorized programming examples that cover properties, selectors, and functions. It provides multiple solutions for styling H
2 min read