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: OSI Models, Network Security, Security Controls, Wireless Networks, Network Protocols, Firewall, Network Administration, TCP/IP, Telecommunications, Proxy Servers, Network Infrastructure, System Configuration, Network Architecture, Intrusion Detection and Prevention
★ 4.6 (38) · Beginner · Course · 1 - 4 Weeks

DeepLearning.AI
Skills you'll gain: LLM Application, Tool Calling, Large Language Modeling, Generative AI Agents, AI Workflows, Context Management, Memory Management, Prompt Engineering, Agentic systems, Data Persistence, System Design and Implementation
★ 4.6 (15) · Intermediate · Project · Less Than 2 Hours

LearnKartS
Skills you'll gain: Kubernetes, Application Deployment, Cloud-Native Computing, Cloud Deployment, IT Automation, Containerization, Scalability, Devops Tools, Configuration Management, DevOps, Application Lifecycle Management, System Configuration, Security Controls, Memory Management, Data Persistence
★ 4.1 (20) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Microarchitecture, Computer Architecture, Hardware Architecture, Simulations, Computer Hardware, Performance Tuning, Memory Management
★ 4.7 (6) · Intermediate · Course · 1 - 3 Months

Illinois Tech
Skills you'll gain: Virtualization, Virtualization and Virtual Machines, Virtual Machines, Virtual Networking, Data Centers, Virtual Local Area Network (VLAN), Data Storage Technologies, Data Storage, Data Infrastructure, Servers, Virtual Reality, Memory Management, Network Switches, iSCSI Configuration, Remote Access Systems, Computer Hardware
★ 4.9 (15) · Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Unreal Engine, C++ (Programming Language), Video Game Development, Program Development, Object Oriented Programming (OOP), Object Oriented Design, Programming Principles, Application Development, Application Design, Memory Management
★ 4.8 (18) · Intermediate · Course · 1 - 4 Weeks

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Scala Programming, Programming Principles, Theoretical Computer Science, Other Programming Languages, Computer Programming, Computational Logic, Functional Design, Data Structures, Memory Management
★ 4.7 (18) · Mixed · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: File I/O, Simulations, C (Programming Language), Computational Thinking, Automation, Algorithms, Data Structures, Programming Principles, Memory Management
★ 4.4 (36) · Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Strategic Communication, Communication Planning, Target Audience, Campaign Planning, Corporate Communications, Stakeholder Communications, Public Relations, Marketing Communications, Advertising Campaigns, Media Strategy, Brand Strategy, Communication Strategies, Integrated Marketing Communications, Target Market, Media Planning, Promotional Strategies, Branding, Earned Media, Brand Management, Business Strategy
★ 4.5 (48) · Beginner · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Computer Architecture, Hardware Architecture, Microarchitecture, Computer Systems, Computational Logic, Hardware Design, Computer Hardware, Programming Principles, System Programming, Systems Architecture, Program Development, Data Storage, Memory Management
★ 4.5 (13) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Peripheral Devices, Network Troubleshooting, Desktop Support, Computer Displays, USB, Wireless Networks, Virtualization and Virtual Machines, Network Administration, Display Devices, Virtual Machines, General Networking, TCP/IP, Virtualization, Computing Platforms, Network Support, Virtual Local Area Network (VLAN), Hardware Architecture, Data Storage, Computer Systems, Memory Management
Beginner · Specialization · 3 - 6 Months

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