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: Prompt Engineering, LLM Application, OpenAI API, OpenAI, Large Language Modeling, Agentic systems, Hugging Face, Embeddings, AI Integrations, Application Development, Data Processing, Generative AI Agents, Application Frameworks, Memory Management
★ 3.3 (20) · Intermediate · Course · 3 - 6 Months

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
★ 4.5 (24) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Incident Response, Computer Security Incident Management, Endpoint Detection and Response, Cyber Threat Intelligence, Intrusion Detection and Prevention, Threat Detection, Cyber Attacks, Cybersecurity, Network Security, Digital Forensics, Network Monitoring, Data Security, Network Analysis, Exploitation techniques, Malware Protection, Memory Management
★ 4.8 (96) · Beginner · Course · 1 - 3 Months

L&T EduTech
Skills you'll gain: Embedded Software, Peripheral Devices, Integrated Development Environments, Embedded Systems, Internet Of Things, Microarchitecture, Automation, Real Time Data, Hardware Architecture, Computer Architecture, Prototyping, Memory Management
★ 4.6 (298) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Embedded Systems, Embedded Software, C (Programming Language), C and C++, Programming Principles, Memory Management, Hardware Architecture, Computational Logic, Computer Architecture, Computer Programming, Peripheral Devices, Data Storage
★ 4.5 (43) · Intermediate · Course · 1 - 4 Weeks

Nanjing University
Skills you'll gain: Operating Systems, File Management, Computer Systems, File Systems, OS Process Management, System Software, Software Architecture, Software Systems, Memory Management, Software Design, System Design and Implementation, File I/O, Computer Hardware, Peripheral Devices, Algorithms, Human Computer Interaction
★ 4.5 (143) · Mixed · Course · 1 - 3 Months

Nanjing University
Skills you'll gain: Debugging, Computer Systems, Computer Architecture, Microarchitecture, System Programming, System Software, Computational Logic, Programming Principles, Hardware Architecture, Data Storage, Operating Systems, Secure Coding, Data Structures, Application Security, Memory Management
★ 4.7 (59) · Mixed · 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
★ 4.3 (290) · Intermediate · Guided Project · Less Than 2 Hours

Microsoft
Skills you'll gain: Debugging, Program Development, Software Documentation, Pseudocode, C++ (Programming Language), Computational Thinking, C and C++, Programming Principles, Computer Programming, Integrated Development Environments, Development Environment, Memory Management
★ 4.4 (22) · Beginner · Course · 1 - 3 Months

Simplilearn
Skills you'll gain: Object Oriented Programming (OOP), C++ (Programming Language), Object Oriented Design, Memory Management, Computer Programming, Code Reusability, Programming Principles, Algorithms, Data Structures, Data Manipulation
★ 4.4 (59) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Microarchitecture, Memory Management, System Programming, Embedded Software, Hardware Architecture, System Software, Embedded Systems, Computer Architecture, Programming Principles, System Configuration, Debugging, Application Development
★ 4.7 (51) · Intermediate · Course · 1 - 3 Months

International Institute of Information Technology, Hyderabad
Skills you'll gain: Computer Engineering, Computer Science, System Programming, Memory Management, Performance Tuning, Computational Logic, Numerical Analysis, Algorithms, Debugging
★ 4.7 (7) · Intermediate · Course · 1 - 4 Weeks