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: Rust (Programming Language), Data Structures, Memory Management, Code Reusability, Package and Software Management, Blockchain, Development Environment, Web Development, Performance Testing, Programming Principles, System Programming, Algorithms, Integrated Development Environments, Software Testing, Software Installation
★ 3.7 (26) · Beginner · Specialization · 3 - 6 Months

University of Geneva
Skills you'll gain: Data-oriented programming, Memory Management, Object Oriented Design, System Programming, Microarchitecture, Performance Testing, Hardware Architecture, Data Access
★ 4.4 (7) · Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Embedded Software, Real-Time Operating Systems, Embedded Systems, Software Architecture, Code Reusability, Pseudocode, Microarchitecture, Memory Management, Systems Architecture, Hardware Architecture, Computer Hardware, Electronic Hardware, System Programming, Computer Architecture, Software Design, Cross Platform Development, Systems Design, Software Design Patterns, Internet Of Things, Hardware Troubleshooting
★ 2.6 (10) · Intermediate · Specialization · 1 - 3 Months

Politecnico di Milano
Skills you'll gain: Application Specific Integrated Circuits, Amazon Elastic Compute Cloud, Cloud Infrastructure, Cloud Development, Cloud Deployment, Amazon Web Services, Hardware Architecture, Cloud Applications, Performance Tuning, Software Development, Computer Architecture, Development Environment, Software Development Tools, Memory Management, Programming Principles, Computer Programming Tools
★ 4.7 (77) · Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Real-Time Operating Systems, Embedded Software, Embedded Systems, Performance Tuning, Hardware Design, Systems Architecture, Systems Design, Hardware Architecture, Software Architecture, System Software, System Design and Implementation, Reliability, System Programming, Real Time Data, Performance Testing, Failure Analysis, System Requirements, Memory Management, Data Integrity, Linux
★ 4.4 (20) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: OSI Models, Network Security, Security Controls, General Networking, Wireless Networks, Network Protocols, Firewall, Network Administration, TCP/IP, Telecommunications, Proxy Servers, Distributed Denial-Of-Service (DDoS) Attacks, Network Infrastructure, System Configuration, Network Architecture, Intrusion Detection and Prevention, Hardening, Remote Access Systems, Authentications
★ 4.6 (42) · Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Network Security, Distributed Denial-Of-Service (DDoS) Attacks, Hardening, Cryptographic Protocols, Cybersecurity, Encryption, Security Controls, Proxy Servers, Information Privacy, Servers, Communication Systems, Web Servers, Network Routing, Network Analysis, Cloud Hosting, Cloud Deployment
★ 4.1 (36) · Intermediate · Course · 1 - 4 Weeks

International Institute of Information Technology, Hyderabad
Skills you'll gain: Microarchitecture, Computer Architecture, Hardware Architecture, Systems Architecture, Computer Systems, Computer Hardware, Performance Tuning, Memory Management
Intermediate · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Corporate Communications, Media Relations, Strategic Communication, Target Audience, Earned Media, Public Relations, Social Media Marketing, Social Media Management, Social Media, Stakeholder Communications, Public Affairs, Marketing Communications, Branding, Social Media Campaigns, Brand Strategy, Brand Management, Communication Strategies, Stakeholder Management, Internal Communications, Corporate Sustainability
★ 4.6 (36) · Beginner · Course · 1 - 4 Weeks

Arizona State University
Skills you'll gain: Problem Solving, Critical Thinking and Problem Solving, Creativity, Creative Problem-Solving, Human Factors, Decision Making, Human Learning, Human Computer Interaction, Mental Concentration, Human Machine Interfaces, Learning Theory, Usability, Memory Management, Human Centered Design
★ 4.9 (11) · Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: AI Orchestration, AI Workflows, CrewAI, LangGraph, Agentic Workflows, LLM Application, LangChain, Large Language Modeling, Agentic systems, Generative AI Agents, AI Integrations, Application Deployment, Artificial Intelligence and Machine Learning (AI/ML), Software Architecture, Systems Architecture, Context Management, API Design, Software Design, Data Validation, Memory Management
★ 4.1 (7) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Exploitation techniques, Penetration Testing, Vulnerability Scanning, Proxy Servers, Security Testing, Vulnerability Assessments, Test Tools
★ 4.6 (82) · Beginner · Course · 1 - 4 Weeks