Free courses can help you learn coding languages like Python and JavaScript, data analysis techniques, and web development fundamentals. You can build skills in problem-solving, algorithm design, and creating interactive websites. Many courses introduce tools such as Git for version control, SQL for database management, and various frameworks that streamline web development, allowing you to apply your skills in practical projects.

University of Colorado Boulder
Skills you'll gain: Bash (Scripting Language), Scalability, Distributed Computing, Shell Script, Computer Systems, Big Data, Linux Commands, Hardware Architecture, Operating Systems, Unix Shell, File Systems, Computing Platforms, Linux, Performance Testing, Scripting, Performance Tuning, Memory Management, Computer Architecture, Capacity Management, File Management
Build toward a degree
Beginner · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: API Gateway, Application Programming Interface (API), Cloud API, API Design, Application Deployment, Restful API, Continuous Deployment, AI Integrations, Cloud Deployment, LLM Application, Web Services, AI Security, CI/CD, AI Workflows, Token Optimization, Prompt Patterns, Proxy Servers, Large Language Modeling, Application Lifecycle Management, Simple Object Access Protocol (SOAP)
Beginner · Course · 1 - 3 Months

Universidad Nacional Autónoma de México
Skills you'll gain: Java, Object Oriented Programming (OOP), Java Programming, Object Oriented Design, Android Development, Android Studio, Mobile Development, Memory Management, Programming Principles, Code Reusability, Integrated Development Environments, Computational Logic, Development Environment
Mixed · Course · 1 - 4 Weeks

Vanderbilt University
Skills you'll gain: AI Orchestration, Agentic Workflows, OpenAI API, Generative AI Agents, LLM Application, Prompt Patterns, AI Workflows, Prompt Engineering, Agentic systems, AI Security, Business Logic, File I/O, Transaction Processing, Software Architecture, Memory Management
Beginner · Course · 1 - 3 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Object Oriented Programming (OOP), Java Programming, Java, Object Oriented Design, Computer Programming, Memory Management
Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Penetration Testing, Exploit development, Metasploit, Application Security, Security Testing, Cyber Security Assessment, Vulnerability Scanning, Brute-force attacks, Secure Coding, Exploitation techniques, Software Design Patterns, Vulnerability Assessments, Memory Management, Amazon Web Services, SQL, Amazon Elastic Compute Cloud, Operating Systems, Data Validation
Intermediate · Course · 1 - 4 Weeks

National Taiwan University
Skills you'll gain: Programming Principles, Computer Programming, C (Programming Language), Data Structures, Computational Logic, Program Development, Memory Management
Mixed · Course · 1 - 3 Months

Peking University
Skills you'll gain: C and C++, Object Oriented Design, Object Oriented Programming (OOP), C (Programming Language), Programming Principles, Data Structures, Computer Programming, Algorithms, Maintainability, Memory Management
Mixed · Course · 1 - 3 Months

EDUCBA
Skills you'll gain: C (Programming Language), Embedded Systems, Embedded Software, Debugging, System Programming, Systems Architecture, Hardware Architecture, Microarchitecture, Computer Architecture, Data Structures, Computer Hardware, Peripheral Devices, Memory Management, Data Storage
Beginner · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: Rust (Programming Language), Test Case, Memory Management, Software Testing, Data Structures, GitHub, Package and Software Management, Development Environment, System Programming
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Computer Programming, Virtual Machines, Package and Software Management, Memory Management
Beginner · Course · 1 - 4 Weeks

University of California San Diego
Skills you'll gain: Bioinformatics, Markov Model, Molecular Biology, Machine Learning Methods, Algorithms, Data Transformation, Performance Tuning, Memory Management
Intermediate · Course · 1 - 3 Months