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.

Xi'an Jiaotong University
Skills you'll gain: Operating Systems, Computer Systems, Debugging, Microsoft Visual Studio, OS Process Management, Computer Hardware, C# (Programming Language), Computer Architecture, Object Oriented Programming (OOP), Programming Principles, Memory Management, Integrated Development Environments, Computational Logic, Computer Programming, System Design and Implementation
★ 3.9 (40) · Mixed · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Unreal Engine, C++ (Programming Language), Video Game Development, Game Design, Object Oriented Programming (OOP), Object Oriented Design, Programming Principles, Application Development, Application Design, Memory Management
★ 4.8 (18) · Intermediate · Course · 1 - 4 Weeks

Xi'an Jiaotong University
Skills you'll gain: Operating Systems, Microsoft Office, Computer Networking, System Software, Computer Systems, Network Architecture, OS Process Management, Theoretical Computer Science, Computer Science, General Networking, Computer Architecture, Hardware Architecture, Network Protocols, Computer Literacy, Computational Logic, Computing Platforms, Programming Principles, Memory Management, Computer Hardware
★ 3.9 (35) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Graph Theory, Data Structures, Algorithms, Computational Thinking, Theoretical Computer Science, Computer Science, Computer Programming, Python Programming, Memory Management, Performance Tuning
★ 4.4 (33) · Intermediate · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Microsoft Copilot, Scalability, Software Architecture, Performance Tuning, Query Languages, Systems Architecture, Database Management, Distributed Computing, .NET Framework, Maintainability, Back-End Web Development, Memory Management
★ 4.6 (16) · Beginner · Course · 1 - 4 Weeks

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Scala Programming, Programming Principles, Theoretical Computer Science, Other Programming Languages, Computer Programming, Computational Logic, Functional Design, Data Structures, Memory Management, System Implementation, Data Mapping
★ 4.7 (18) · Mixed · Course · 1 - 3 Months

Coursera
Skills you'll gain: Embedded Software, Real-Time Operating Systems, Embedded Systems, Software Architecture, Code Reusability, Pseudocode, Microarchitecture, Memory Management, Systems Architecture, Hardware Architecture, Computer Hardware, Electronic Hardware, System Programming, Computer Architecture, Software Design, Cross Platform Development, Systems Design, Software Design Patterns, Internet Of Things, Hardware Troubleshooting
★ 2.1 (7) · Intermediate · Specialization · 1 - 3 Months

Scrimba
Skills you'll gain: Prompt Engineering, LangChain, LLM Application, Memory Management, AI Workflows, Vector Databases, Scalability, User Interface (UI), Embeddings, Database Application, Data Store, Retrieval-Augmented Generation, Databases, Large Language Modeling, Performance Tuning, Maintainability, Data Storage, Data Preprocessing
★ 4.7 (54) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Rust (Programming Language), Data Structures, Memory Management, Code Reusability, Package and Software Management, Blockchain, Web Development, Development Environment, Performance Testing, Programming Principles, System Programming, Algorithms, Integrated Development Environments, Software Testing, Software Installation
★ 3.7 (26) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Rust (Programming Language), Development Environment, Programming Principles, Data Structures, Memory Management, Integrated Development Environments, System Programming, Software Installation
★ 3.7 (20) · Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Strategic Communication, Communication Planning, Target Audience, Campaign Planning, Corporate Communications, Stakeholder Communications, Public Relations, Marketing Communications, Advertising Campaigns, Media Strategy, Brand Strategy, Communication Strategies, Integrated Marketing Communications, Target Market, Media and Communications, Media Planning, Branding, Earned Media, Brand Management, Business Strategy
★ 4.5 (48) · Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Kubernetes, Application Deployment, Cloud-Native Computing, Scalability, Release Management, Data Persistence, DevOps, Containerization, Devops Tools, Application Lifecycle Management, Configuration Management, Performance Tuning, Security Controls, Data Storage, Memory Management
★ 4.1 (20) · Intermediate · Course · 1 - 3 Months