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: Peripheral Devices, Hardware Troubleshooting, Desktop Support, Computer Hardware, Technical Support, System Requirements, System Configuration, Display Devices, Issue Tracking, Patch Management, Data Storage, Usability, Memory Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: AI Integrations, Cloud Deployment, Application Deployment, Application Programming Interface (API), System Monitoring, Continuous Monitoring, Performance Tuning, Model Optimization, Memory Management
Intermediate · Course · 1 - 3 Months

Simplilearn
Skills you'll gain: LangChain, LLM Application, Retrieval-Augmented Generation, Embeddings, Large Language Modeling, Tool Calling, AI Workflows, Context Management, Generative AI Agents, Vector Databases, Data Store, Agentic systems, Memory Management
★ 3.9 (8) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Real-Time Operating Systems, Embedded Software, Software Architecture, Code Reusability, Embedded Systems, Memory Management, Systems Architecture, Software Design, Software Design Patterns, Performance Tuning, Secure Coding, Scalability, Data Sharing
★ 2.7 (6) · Intermediate · Course · 1 - 4 Weeks
University of Illinois Urbana-Champaign
Skills you'll gain: Digital Transformation, Digital Marketing, Marketing, Digital Brand Strategy, Strategic Marketing, Digital Marketing Tools, Marketing Strategies, Product Marketing, Market Dynamics, Consumer Behaviour, Customer Engagement, Earned Media, Marketing Channel, Promotional Strategies, E-Commerce, Shared Media, Brand Management, Product Development, Revenue Management, Content Creation
★ 4.6 (10) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Hardening, Performance Tuning, Systems Analysis, Operating System Administration, Technical Support and Services, Virtual Environment, Virtualization and Virtual Machines, Memory Management, File I/O, Security Management, Debugging, Service Management, OS Process Management, Data Maintenance, Scripting, Record Keeping, Configuration Management
★ 4.3 (12) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Hardening, Linux Administration, System Monitoring, Linux Commands, Performance Tuning, Linux, Systems Administration, File Management, Network Troubleshooting, Command-Line Interface, Operating System Administration, Memory Management, Security Management, Debugging, Service Management, OS Process Management, Data Maintenance
★ 4.5 (6) · Advanced · Course · 1 - 4 Weeks

International Institute of Information Technology, Hyderabad
Skills you'll gain: System Programming, Memory Management, Performance Tuning, Programming Principles, Computational Logic, Numerical Analysis, Algorithms, Debugging
★ 4.7 (7) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux, Ubuntu, Linux Administration, Linux Servers, General Networking, Memory Management, Linux Commands, OS Process Management, Firewall, File Systems, Bash (Scripting Language), Network Security, Command-Line Interface, File Management, Unix Shell, Operating Systems, Systems Administration, Virtualization, Virtual Environment, Virtualization and Virtual Machines
Beginner · Course · 1 - 3 Months

Skills you'll gain: AI Orchestration, Prompt Patterns, AI Workflows, Agentic Workflows, AI Integrations, OpenAI API, Token Optimization, Test Script Development, Context Management, Code Reusability, Secure Coding, Authentications, Memory Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Eclipse (Software), Computer Programming, Development Environment, Integrated Development Environments, Programming Principles, Data Structures, Memory Management
Beginner · Course · 1 - 3 Months

Skills you'll gain: Graph Theory, Data Structures, Algorithms, Computer Programming, Computational Thinking, Theoretical Computer Science, Memory Management, Software Visualization, Performance Tuning
★ 4.6 (7) · Intermediate · Course · 1 - 3 Months