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.

Amazon Web Services
Skills you'll gain: Generative AI Agents, Agentic Workflows, Context Engineering, LLM Application, Model Context Protocol, Agentic systems, Tool Calling, Generative AI, Context Management, Application Deployment, Cloud Deployment, Model Evaluation, Memory Management, Data Persistence
Beginner · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: C++ (Programming Language), Object Oriented Programming (OOP), Object Oriented Design, Development Environment, Engineering Software, Computer Programming, Software Engineering, Data Structures, Memory Management, Computer Programming Tools, Debugging, Program Development
★ 4.7 (3K) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Java, Object Oriented Design, Java Programming, Maintainability, Software Design, Data Structures, Software Architecture, Memory Management, Programming Principles, Code Reusability, Data Management, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: Social Network Analysis, Social Media Strategy, Content Marketing, Social Media Content, Social Media Marketing, Shared Media, Consumer Behaviour, Driving engagement, Marketing Communications, Content Creation, Influencing, Social Media Campaigns, Persuasive Communication, Advertising, Marketing, Earned Media, Marketing Psychology, Promotional Strategies, Decision Making
★ 4.8 (5.3K) · Mixed · Course · 1 - 4 Weeks

University of California, Santa Cruz
Skills you'll gain: C++ (Programming Language), Object Oriented Programming (OOP), Algorithms, C (Programming Language), Programming Principles, Computer Programming, Graph Theory, Code Reusability, Memory Management, Data Structures, File I/O
★ 4.4 (2.3K) · Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Software Configuration Management, Embedded Software, Embedded Systems, Configuration Management, Git (Version Control System), Version Control, Memory Management, Build Tools, Software Development Tools, C (Programming Language), Development Environment, Program Development, Code Review, Software Technical Review, Software Design, Debugging, Make.com
★ 4.5 (657) · Intermediate · Course · 1 - 4 Weeks

University of California, Santa Cruz
Skills you'll gain: C++ (Programming Language), Go (Programming Language), File I/O, Data Structures, C and C++, Object Oriented Programming (OOP), Object Oriented Design, Software Design Patterns, Debugging, Computer Programming, Programming Principles, Unit Testing, Algorithms, C (Programming Language), Program Development, Software Design, Graph Theory, Software Testing, Code Reusability, Memory Management
★ 4.4 (2.5K) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Object Oriented Design, Object Oriented Programming (OOP), Java Programming, Java, Software Architecture, Memory Management, Code Reusability, Software Design, Maintainability, Application Design, Programming Principles, Secure Coding, User Interface (UI) Design, Javascript
Beginner · Course · 3 - 6 Months

Packt
Skills you'll gain: Secure Coding, Java Programming, Maintainability, Hardening, Java, Software Design Patterns, Application Security, Software Design, Data Structures, Object Oriented Design, Software Architecture, Performance Tuning, Memory Management, API Design, Code Reusability, Object Oriented Programming (OOP), Web Servers, Application Programming Interface (API), Software Development, Virtualization
Intermediate · Specialization · 3 - 6 Months
Skills you'll gain: Debugging, Technical Communication, Network Troubleshooting, Performance Tuning, Problem Management, Technical Documentation, System Monitoring, Capacity Management, Incident Management, Memory Management, Continuous Integration, Continuous Monitoring
★ 4.6 (3.1K) · Beginner · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Go (Programming Language), Object Oriented Programming (OOP), Object Oriented Design, C (Programming Language), Python Programming, Data Import/Export, Algorithms, Memory Management, OS Process Management, Data Structures, System Programming, File I/O, Computational Logic, Network Protocols, Package and Software Management, Data Sharing
★ 4.6 (3K) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: z/OS, Job Control Language (JCL), Mainframe Computing, Mainframe Technologies, System Programming, Computer Architecture, Systems Architecture, Program Development, File I/O, Programming Principles, Maintainability, Computational Logic, Data Structures, Data Access, Data Mapping, Computer Science, Computer Programming, Memory Management, Data Validation
Intermediate · Course · 1 - 3 Months