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: Graph Theory, Data Structures, Algorithms, Computational Thinking, Theoretical Computer Science, Computer Science, Computer Programming, Python Programming, Memory Management, Performance Tuning
★ 4.4 (33) · Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: AI Workflows, Agentic Workflows, LangGraph, AI Orchestration, Agentic systems, Generative AI Agents, LangChain, LLM Application, AI Integrations, Software Architecture, Systems Architecture, Software Design, Data Validation, Data Persistence, Context Management, Scalability, Systems Integration, Memory Management
★ 4.3 (6) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Oracle Databases, Database Administration, Relational Databases, Database Management Systems, Database Architecture and Administration, Data Import/Export, Patch Management, Memory Management, Database Management, Multi-Tenant Cloud Environments, Database Software, Software Installation, Performance Tuning, Server Administration, Data Maintenance, Query Languages, User Accounts, System Configuration, SQL, Virtual Environment
★ 4.7 (13) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: C++ (Programming Language), Software Documentation, Performance Tuning, Application Design, Technical Documentation, Application Development, Memory Management, Data Structures, Generative AI, Algorithms, Scalability
★ 4.9 (9) · Beginner · 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
★ 4.6 (16) · Intermediate · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: API Gateway, Cloud API, Application Programming Interface (API), Capacity Management, Kubernetes, Google Cloud Platform, Istio, Application Security, Scalability, 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

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: C and C++, C++ (Programming Language), Object Oriented Design, Object Oriented Programming (OOP), Debugging, Code Reusability, Computer Programming, Memory Management, Programming Principles, Program Development, Functional Design
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: LLM Application, Data Processing, Data Transformation, Generative AI Agents, Generative AI, Workflow Management, Artificial Intelligence, Context Management, Memory Management, Automation, JSON
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Memory Management, Programming Principles, Integrated Development Environments, Computational Logic, Software Development Tools, Secure Coding, Other Programming Languages, Program Development, Data Storage, Data Management, Development Testing
★ 4.9 (8) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Retrieval-Augmented Generation, Prompt Patterns, Token Optimization, Memory Management, Context Management, Document Management, Embeddings, User Interface (UI), Vector Databases, Debugging
Advanced · Course · 1 - 3 Months

Emory University
Skills you'll gain: Marketing, Marketing Strategy and Techniques, Marketing Effectiveness, Marketing Planning, Marketing Management, Earned Media, Marketing Communications, Promotions and Campaigns, Branding, Market Dynamics, Target Market, Product Promotion, Customer Insights, Owned Media, Conversion Funnel Analysis, Order Delivery
★ 5 (16) · Beginner · Course · 1 - 3 Months