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 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

Duke University
Skills you'll gain: File I/O, Memory Management, Maintainability, C (Programming Language), Software Engineering, System Programming, Programming Principles, Software Development, Simulations, Command-Line Interface, Collaborative Software
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Field-Programmable Gate Array (FPGA), Computational Logic, Computer Architecture, Hardware Design, Hardware Architecture, Memory Management, Electronics, Electronic Systems, Electronic Components, Diagram Design, Data Storage, Data Storage Technologies, Algorithms
Intermediate · Course · 1 - 4 Weeks

Duke University
Skills you'll gain: C (Programming Language), Data Structures, C and C++, Programming Principles, Program Development, Algorithms, Memory Management, Computer Programming, Data Access
Beginner · Course · 1 - 3 Months

Microsoft
Skills you'll gain: Debugging, Program Development, Software Documentation, Pseudocode, C++ (Programming Language), Programming Principles, Computer Programming, Computer Programming Tools, Memory Management
Beginner · Course · 1 - 3 Months

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

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

Skills you'll gain: Embedded Software, Performance Tuning, System Programming, Software Development Tools, Embedded Systems, Memory Management, Microarchitecture, Software Development, Hardware Architecture, Debugging, Secure Coding, Build Tools, Application Security, Computer Architecture, System Configuration, Programming Principles, C (Programming Language), Digital Signal Processing, Application Development, C++ (Programming Language)
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Microarchitecture, Computer Architecture, Hardware Architecture, Computer Hardware, System Programming, Data Storage, Memory Management, Computational Logic, Computer Programming, C (Programming Language), Data Storage Technologies, Program Development, C# (Programming Language)
Beginner · Course · 1 - 3 Months

Peking University
Skills you'll gain: File Systems, Operating Systems, Memory Management, OS Process Management, System Software, Computer Systems, File Management, File I/O, Unix, Performance Tuning, Algorithms
Intermediate · Course · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Artificial Neural Networks, Image Analysis, Event-Driven Programming, Scalability, Applied Machine Learning, Deep Learning, C and C++, Memory Management, Performance Tuning, C++ (Programming Language), Dataflow, Digital Signal Processing, Linear Algebra, Distributed Computing, Hardware Architecture, Programming Principles, Computer Architecture, System Programming, Program Development, Machine Learning
Build toward a degree
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Hardware Troubleshooting, Computer Hardware, Hardware Architecture, Microarchitecture, Computer Architecture, Desktop Support, Data Storage Technologies, System Configuration, Computer Systems, Data Storage, Information Technology, Memory Management
Beginner · Course · 1 - 3 Months