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.

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, Android (Operating System), Programming Principles, Integrated Development Environments, Development Environment
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: TCP/IP, System Programming, Network Protocols, Program Development, Memory Management, Hardware Architecture, Computer Hardware
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Network Troubleshooting, Display Devices, Cloud Computing Architecture, Networking Hardware, Dynamic Host Configuration Protocol (DHCP), Cloud Computing, Firewall, Virtual Networking, Mobile Security, Network Infrastructure, USB, Computer Networking, Cloud Services, Software Installation, Augmented Reality, Microarchitecture, IT Infrastructure, System Configuration, Data Storage, Memory Management
Intermediate · Specialization · 3 - 6 Months

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

Skills you'll gain: AI Orchestration, AI Workflows, Agentic Workflows, Agentic systems, Generative AI Agents, LLM Application, AI Integrations, Tool Calling, Large Language Modeling, Software Design Patterns, Memory Management
Intermediate · Course · 1 - 4 Weeks

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

New York University
Skills you'll gain: Network Security, Firewall, IT Security Architecture, Distributed Denial-Of-Service (DDoS) Attacks, Network Architecture, Intrusion Detection and Prevention, TCP/IP, Cybersecurity, Threat Detection, Cyber Threat Intelligence, Cyber Attacks, Security Controls, Enterprise Security, Network Protocols, Proxy Servers
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Memory Management, Performance Tuning, System Programming, Hardware Architecture, Program Development, Computer Architecture, Performance Testing, Computer Hardware, Algorithms
Intermediate · Course · 1 - 3 Months

Peking University
Skills you'll gain: Data Structures, Memory Management, Algorithms, Computer Programming, Database Management Systems, Theoretical Computer Science, Data Access, Performance Tuning, File Management
Mixed · Course · 1 - 3 Months

Dartmouth College
Skills you'll gain: C (Programming Language), Memory Management, C and C++, Embedded Systems, Data Structures, Programming Principles, Computer Engineering, Algorithms, Computer Programming, Linux
Beginner · Course · 1 - 3 Months

Skills you'll gain: Open Web Application Security Project (OWASP), Vulnerability Scanning, Proxy Servers, Security Testing, Penetration Testing, Vulnerability Assessments, Brute-force attacks, Test Tools, Web Scraping
Intermediate · Guided Project · Less Than 2 Hours

Simplilearn
Skills you'll gain: Data Structures, C (Programming Language), C and C++, Programming Principles, Data Management, Memory Management, Algorithms, Computer Programming, File I/O, File Management, Other Programming Languages, Development Environment
Beginner · Course · 1 - 4 Weeks