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: Transaction Processing, Data Persistence, Performance Tuning, System Programming, Memory Management, Operating Systems, C++ (Programming Language), C (Programming Language), System Configuration, Hardware Architecture, Data Storage, Computer Hardware, Data Storage Technologies, Computing Platforms, Program Development, Application Development
★ 5 (71) · Beginner · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: API Gateway, Cloud API, Application Programming Interface (API), Capacity Management, Kubernetes, Istio, Google Cloud Platform, Scalability, Application Security, Hybrid Cloud Computing, Security Controls, Apache Cassandra, Proxy Servers, Data Security, Application Deployment, Role-Based Access Control (RBAC), Public Key Infrastructure, YAML, Debugging
★ 4.5 (17) · Beginner · Course · 1 - 3 Months

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

Board Infinity
Skills you'll gain: Retrieval-Augmented Generation, AI Workflows, Agentic Workflows, Vector Databases, LangGraph, LangChain, AI Orchestration, LLM Application, Generative AI Agents, Embeddings, Application Performance Management, Large Language Modeling, Agentic systems, Data Pipelines, Semantic Web, Software Visualization, Performance Tuning, Context Management, Debugging, Memory Management
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: Oracle Databases, Memory Management, Database Administration, Database Management, Database Architecture and Administration, Performance Tuning, Server Administration, Data Maintenance, User Accounts, Disaster Recovery, Data Storage, Role-Based Access Control (RBAC), Identity and Access Management, System Configuration, Authentications
Intermediate · 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

Illinois Tech
Skills you'll gain: Web Analytics, Paid media, Digital Marketing, Email Marketing, Social Media Analytics, Digital Media Strategy, Digital Marketing Campaigns, Digital Marketing Tools, Marketing Analytics, Digital Analysis, Data-Driven Marketing, Social Media Marketing, Marketing Effectiveness, Earned Media, Social Media Campaigns, Social Media, Media Strategy, Content Performance Analysis, Analytics, Owned Media
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Rust (Programming Language), Data Structures, Code Reusability, Memory Management, Package and Software Management, Algorithms, Software Testing
★ 3.8 (9) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Redis, Data Store, Key Management, Data Structures, Data Storage, Data Management, Data Access, Performance Tuning, Memory Management
★ 4.9 (16) · Beginner · 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: Embedded Software, Embedded Systems, Pseudocode, Microarchitecture, Hardware Architecture, Computer Architecture, Software Design, System Programming, Software Design Patterns, Systems Design, Systems Integration, Programming Principles, Event-Driven Programming, Program Development, Real Time Data, Peripheral Devices, Memory Management
Beginner · Course · 1 - 4 Weeks