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.

Skills you'll gain: Session Initiation Protocols, Node.JS, File Transfer Protocol (FTP), Debugging, Web Applications, Data Import/Export, File I/O, Frontend Performance, Scalability, Verification And Validation, Full-Stack Web Development, Data Validation, JSON, Real Time Data, Event-Driven Programming, Memory Management, Performance Tuning, Server Side, Application Programming Interface (API), User Interface (UI)
Intermediate · Course · 1 - 3 Months

Peking University
Skills you'll gain: Microarchitecture, Computer Architecture, Computer Systems, Hardware Architecture, Computer Hardware, Computer Engineering, Peripheral Devices, Data Storage, Display Devices, Systems Architecture, Memory Management, Computational Logic, OS Process Management
★ 4.8 (483) · Mixed · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Model Context Protocol, Prompt Engineering, Retrieval-Augmented Generation, LangChain, OpenAI API, Prompt Patterns, Embeddings, Image Analysis, Responsible AI, AI Workflows, OpenAI, LLM Application, AI Integrations, Cloud Deployment, Cloud Applications, Multimodal Prompts, Memory Management, Hugging Face, Vector Databases, Software Engineering
★ 4.5 (430) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Object Oriented Programming (OOP), File I/O, Data Persistence, Object Oriented Design, Java, Java Programming, File Management, Memory Management, Code Reusability, Application Development, Maintainability, Computer Programming, Software Design, Development Environment, Program Development, Application Design, Programming Principles, Computer Programming Tools, Data Structures, Integrated Development Environments
★ 4.6 (254) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: File I/O, C and C++, Data Import/Export, C++ (Programming Language), Object Oriented Programming (OOP), Object Oriented Design, Data Validation, Programming Principles, Computer Programming, Data Integrity, Data Structures, Code Reusability, File Management, Data Store, Memory Management, Software Documentation, Computer Science, Maintainability, Computational Logic, Development Environment
★ 4.6 (1.3K) · Beginner · Specialization · 3 - 6 Months

Peking University
Skills you'll gain: Data Structures, Algorithms, C++ (Programming Language), Memory Management, C and C++, Graph Theory, Object Oriented Programming (OOP), File I/O, Object Oriented Design, Computational Thinking, C (Programming Language), Programming Principles, Theoretical Computer Science, Program Development, Computer Programming, Computer Science, Application Development, Systems Development, Data Storage, Computer Architecture
★ 4.8 (2.7K) · Beginner · Specialization · 3 - 6 Months
Skills you'll gain: File Systems, Operating Systems, OS Process Management, Memory Management, C (Programming Language), File Management, Virtualization, Computer Programming Tools, Data Integrity, Debugging, File I/O, Virtualization and Virtual Machines, System Programming, Systems Design, Data Maintenance, Data Storage Technologies, System Software, Performance Tuning, Distributed Computing, C and C++
★ 4.6 (322) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Mainframe Computing, Mainframe Technologies, z/OS, Virtualization, Virtualization and Virtual Machines, Virtual Machines, Hardware Architecture, Infrastructure Architecture, Computing Platforms, Computer Architecture, Enterprise Security, Computer Hardware, Cryptography, Transaction Processing, System Configuration, Authorization (Computing), Identity and Access Management, Memory Management
★ 4.7 (1.1K) · Beginner · Course · 1 - 4 Weeks

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Programming Principles, C++ (Programming Language), C and C++, Data Structures, Computer Programming, Memory Management, Code Reusability, Computational Logic, Program Development
★ 4.8 (460) · Beginner · Course · 1 - 3 Months

University of California, Santa Cruz
Skills you'll gain: C++ (Programming Language), Object Oriented Design, Software Design Patterns, Object Oriented Programming (OOP), Software Design, Programming Principles, C (Programming Language), Algorithms, Memory Management, Graph Theory, Artificial Intelligence, Data Structures, Simulations
★ 4.5 (337) · Intermediate · Course · 1 - 3 Months

KodeKloud
Skills you'll gain: API Gateway, Kubernetes, Nginx, Cloud-Native Computing, Software-Defined Networking, Proxy Servers, Web Servers, Public Key Infrastructure, DevOps, Continuous Deployment, Network Troubleshooting, Role-Based Access Control (RBAC), Infrastructure Security, Computer Networking, Application Deployment, Network Security, Security Controls, System Configuration, Security Software, Verification And Validation
Intermediate · Course · 1 - 3 Months

University of Michigan
Skills you'll gain: Memory Management, C (Programming Language), C++ (Programming Language), Object Oriented Programming (OOP), Object Oriented Design, C and C++, Programming Principles, Data Structures, Secure Coding, Algorithms, Software Design, Application Security, Other Programming Languages, System Programming, Python Programming, Computer Architecture, Computer Programming, Java, Performance Tuning, Numerical Analysis
★ 4.5 (253) · Intermediate · Specialization · 3 - 6 Months