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.

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

Skills you'll gain: Network Monitoring, Cryptographic Protocols, Distributed Denial-Of-Service (DDoS) Attacks, Routing Protocols, Virtual Private Networks (VPN), Security Controls, OSI Models, Dynamic Host Configuration Protocol (DHCP), Proxy Servers
★ 4.6 (9) · Beginner · Course · 1 - 4 Weeks

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

Skills you'll gain: Instagram, TikTok, Debugging, Keyword Research, Podcasting, Video Production, Vibe coding, Prototyping, Social Media Content, Social Media Management, Shared Media, Social Media Marketing, Search Engine Optimization, Copywriting, Mobile Development, Paid media, Business Planning, Mobile Development Tools, Earned Media, Other Mobile Programming Languages
Beginner · Specialization · 3 - 6 Months

Kennesaw State University
Skills you'll gain: Email Security, Wireless Networks, Mobile Security, Incident Response, Cybersecurity, Cyber Security Assessment, Personally Identifiable Information, Cyber Attacks, Firewall, General Networking, Threat Detection, Cyber Security Policies, Computer Security Awareness Training, Proxy Servers, Computer Security Incident Management, Network Security, Security Awareness, Threat Management, Cyber Risk, Social Media
★ 4.9 (63) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: API Gateway, Application Programming Interface (API), Kubernetes, Cloud API, Google Cloud Platform, Hybrid Cloud Computing, Application Performance Management, Capacity Management, Istio, Scalability, API Testing, Security Controls, System Monitoring, Apache Cassandra, Application Deployment, Patch Management, Proxy Servers, Data Security, Cloud Deployment, Package and Software Management
★ 4.6 (58) · Beginner · Specialization · 1 - 3 Months

International Institute of Information Technology Bangalore
Skills you'll gain: File I/O, C (Programming Language), Memory Management, Programming Principles, C and C++, Data Structures, Computer Programming, Program Development, Integrated Development Environments, Software Installation, Problem Solving
★ 4.8 (8) · Beginner · Course · 1 - 3 Months

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
★ 4.6 (31) · Intermediate · Course · 1 - 3 Months

Vanderbilt University
Skills you'll gain: Generative AI Agents, Java, Java Programming, Agentic systems, Agentic Workflows, AI Workflows, Generative AI, LLM Application, Tool Calling, OpenAI API, Application Development, Prompt Engineering, Large Language Modeling, Memory Management
★ 4.2 (25) · Beginner · Course · 1 - 3 Months

Skills you'll gain: File I/O, Object Oriented Programming (OOP), C and C++, C++ (Programming Language), Data Structures, Object Oriented Design, Code Reusability, Memory Management, Data Persistence, Algorithms
★ 4.8 (10) · Advanced · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Social Media Strategy, Social Media, Social Media Content, Media Planning, Social Media Marketing, Media Strategy, Social Media Management, Strategic Communication, Paid media, Content Strategy, Digital Media Strategy, Earned Media, Owned Media, Content Marketing, Brand Strategy, Content Performance Analysis, Driving engagement, Social Media Analytics, Content Creation, Brand Management
★ 4.8 (6) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: API Gateway, Kubernetes, Cloud API, Google Cloud Platform, Hybrid Cloud Computing, Application Programming Interface (API), API Testing, Application Deployment, Software Installation, Proxy Servers, Verification And Validation, Configuration Management, YAML
★ 4.6 (44) · Beginner · Course · 1 - 4 Weeks