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.

DeepLearning.AI
Skills you'll gain: CrewAI, AI Workflows, AI Orchestration, Agentic Workflows, Generative AI Agents, Agentic systems, LLM Application, Automation, Artificial Intelligence and Machine Learning (AI/ML), Model Context Protocol, Context Engineering, Artificial Intelligence, System Monitoring, Workflow Management, Context Management, Tool Calling, Continuous Monitoring, Scalability, Memory Management, Large Language Modeling
Beginner · Course · 1 - 4 Weeks

Fortinet, Inc.
Skills you'll gain: Network Support, Network Troubleshooting, Firewall, Network Monitoring, Technical Support and Services, Network Security, Virtual Private Networks (VPN), Lightweight Directory Access Protocols, System Monitoring, Authentications, Performance Tuning, Security Software, System Configuration, Cybersecurity, Memory Management, Malware Protection
Intermediate · Course · 1 - 3 Months

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
Beginner · 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, Exploit development
Mixed · Course · 1 - 3 Months

Skills you'll gain: Graph Theory, Data Structures, Algorithms, Computational Thinking, Theoretical Computer Science, Computer Science, Computer Programming, Python Programming, Memory Management, Performance Tuning
Intermediate · Course · 1 - 3 Months

Peking University
Skills you'll gain: Memory Management, Data Structures, Algorithms, Computer Science, Program Development, Performance Tuning
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
Intermediate · Guided Project · Less Than 2 Hours

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

Coursera
Skills you'll gain: AI Orchestration, AI Workflows, LLM Application, Agentic Workflows, Generative AI Agents, Agentic systems, Tool Calling, LangChain, Artificial Intelligence, Memory Management, Model Evaluation, Development Testing, Debugging
Intermediate · Course · 1 - 4 Weeks
University of Colorado Boulder
Skills you'll gain: Google Ads, Online Advertising, Digital Advertising, Contextual Advertising, Advertising, Paid media, Advertising Campaigns, Media Buying, Media Planning, Digital Media Strategy, Earned Media, Target Audience, Content Strategy, Data-Driven Marketing, Data Ethics, Business Ethics
Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Intrusion Detection and Prevention, Security Controls, Malware Protection, Security Engineering, Network Security, Security Testing, Threat Detection, Firewall, Digital Forensics, Anomaly Detection, Code Review, Network Routing, Proxy Servers, Linux, Internet Of Things
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Hardware Architecture, Data Storage, Computer Systems, Memory Management
Beginner · Course · 1 - 3 Months