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: Retrieval-Augmented Generation, OpenAI API, Prompt Patterns, AI Workflows, Generative Model Architectures, Fine-tuning, Model Deployment, Token Optimization, AI Integrations, Applied Machine Learning, Hugging Face, Artificial Intelligence and Machine Learning (AI/ML), Application Deployment, Memory Management, Object Oriented Programming (OOP), Context Management, API Testing, Document Management, AI literacy, Model Optimization
Intermediate · Specialization · 3 - 6 Months

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
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Linux Servers, Linux Administration, Unix, Linux Commands, Linux, Unix Commands, Command-Line Interface, OS Process Management, Operating System Administration, Unix Shell, Debugging, System Monitoring, DevOps, Memory Management, Resource Management
Intermediate · Guided Project · Less Than 2 Hours

Microsoft
Skills you'll gain: Memory Management, Development Testing, Programming Principles, Code Reusability, Generative AI
Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: File I/O, Simulations, C (Programming Language), Computational Thinking, Automation, Algorithms, Theoretical Computer Science, Memory Management, Data Persistence
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
Intermediate · Project · Less Than 2 Hours

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, Cloud Hosting, Network Support, Hardware Architecture, Data Storage, Computer Systems, Memory Management
Beginner · Specialization · 3 - 6 Months

Xi'an Jiaotong University
Skills you'll gain: Operating Systems, Computer Systems, Debugging, Microsoft Visual Studio, OS Process Management, Computer Hardware, C# (Programming Language), Computer Architecture, Object Oriented Programming (OOP), Programming Principles, Memory Management, Integrated Development Environments, Computational Logic, Computer Programming, System Design and Implementation
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Microarchitecture, Computer Architecture, Hardware Architecture, Simulations, Computer Hardware, Performance Tuning, Memory Management, Dependency Analysis
Intermediate · Course · 1 - 3 Months

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
Beginner · Course · 1 - 4 Weeks

University of Geneva
Skills you'll gain: Data-oriented programming, Memory Management, Object Oriented Design, System Programming, Microarchitecture, Performance Testing, Hardware Architecture, Data Access
Intermediate · Course · 1 - 3 Months
University of Colorado Boulder
Skills you'll gain: Microarchitecture, Hardware Design, Electronic Hardware, Electrical and Computer Engineering, Computer Architecture, Embedded Systems, Hardware Architecture, Electronic Systems, Electronics, Performance Tuning, Peripheral Devices, Memory Management, System Configuration, Value Engineering, Digital Design
Intermediate · Course · 1 - 3 Months