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.

Infosec
Skills you'll gain: Incident Response, Computer Security Incident Management, Incident Management, Threat Management, Cybersecurity, Endpoint Detection and Response, Cyber Attacks, Cyber Threat Intelligence, Digital Forensics, Intrusion Detection and Prevention, Threat Detection, Network Security, Network Monitoring, Data Security, Business Continuity, Network Analysis, Exploitation techniques, Malware Protection, Memory Management, Analysis
★ 4.7 (275) · Beginner · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Bash (Scripting Language), Scalability, Distributed Computing, Shell Script, Computer Systems, Big Data, Linux Commands, Hardware Architecture, Operating Systems, File Systems, Computing Platforms, Linux, Performance Testing, Scripting, Performance Tuning, Memory Management, Programming Principles, Capacity Management, File Management
★ 3.8 (167) · Beginner · Course · 1 - 4 Weeks

University of Toronto
Skills you'll gain: Apple iOS, iOS Development, Swift Programming, Model View Controller, Apple Xcode, Mobile Development, User Interface (UI), Application Design, Application Development, Objective-C (Programming Language), UI Components, Animations, Human Computer Interaction, Interactive Design, Object Oriented Programming (OOP), Memory Management, Application Frameworks, Interaction Design, Mobile Development Tools, Persistence
★ 3.9 (1.6K) · Intermediate · Specialization · 3 - 6 Months

Duke University
Skills you'll gain: Rust (Programming Language), Unit Testing, Test Case, Memory Management, Software Testing, Data Structures, GitHub, Programming Principles, Package and Software Management, Development Environment, System Programming, Software Documentation
★ 4 (240) · Beginner · Course · 1 - 4 Weeks

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
★ 4.7 (663) · Intermediate · Course · 1 - 4 Weeks

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

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

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
★ 4.7 (95) · Intermediate · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Objective-C (Programming Language), iOS Development, Apple iOS, Memory Management, Prototyping, Mobile Development, C and C++, Application Development, C (Programming Language), Object Oriented Programming (OOP), Computer Programming, Programming Principles, Data Structures
★ 4.6 (558) · Mixed · Course · 1 - 4 Weeks

Vanderbilt University
Skills you'll gain: Generative AI Agents, Agentic systems, Agentic Workflows, Generative AI, Email Automation, Prompt Engineering, AI Workflows, ChatGPT, AI Personalization, Expense Management, Expense Reports, AI Orchestration, AI literacy, Workflow Management, Tool Calling, Google Sheets, AI Integrations, Memory Management
★ 4.6 (136) · Beginner · Course · 1 - 4 Weeks

University of California San Diego
Skills you'll gain: Bioinformatics, Computational Thinking, Memory Management, Graph Theory, Python Programming
★ 4.6 (140) · Intermediate · Course · 1 - 3 Months

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