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: Microarchitecture, Network Protocols, Hardware Architecture, Systems Architecture, Computer Architecture, Communication Systems, Transaction Processing, Performance Tuning, Digital Communications, Memory Management, Data Integrity
Intermediate · Course · 1 - 3 Months

Skills you'll gain: z/OS, System Software, Operating Systems, System Programming, Mainframe Computing, System Monitoring, Mainframe Technologies, Operating System Administration, Performance Tuning, System Configuration, OS Process Management, Memory Management, Data Storage, Systems Architecture, Capacity Management, Problem Management, File I/O, Context Management, Software Architecture, Disaster Recovery
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Salesforce Object Query Language (SOQL), Salesforce Development, Salesforce, Data Import/Export, Web Components, Business Process Automation, Data Validation, Web Services, Relationship Management, Workflow Management, UI Components, Data Access, Automation, Application Security, Test Script Development, Secure Coding, Web Development, Memory Management, Unit Testing, Object Oriented Programming (OOP)
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Redis, Data Store, Key Management, Data Structures, Data Storage, Performance Tuning, Memory Management
Beginner · Course · 1 - 4 Weeks

Packt
Skills you'll gain: Rust (Programming Language), Memory Management, System Programming, Package and Software Management, Data Structures, Software Installation, Code Reusability, Build Tools, Programming Principles, Other Programming Languages, Secure Coding, Maintainability, Data Management, Integrated Development Environments, Data Sharing, Data Access
Beginner · Specialization · 3 - 6 Months

Northeastern University
Skills you'll gain: Algorithms, Theoretical Computer Science, Data Structures, Computational Thinking, Analysis, Performance Tuning, Memory Management, Scalability
Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Memory Management, C and C++, Scalability, Performance Tuning, C++ (Programming Language), Microarchitecture, Computer Architecture, Performance Stress Testing, Cross Platform Development, Hardware Architecture, Computing Platforms, Program Development, Application Frameworks, Software Installation, Development Environment
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Redis, Data Persistence, Data Store, NoSQL, Performance Tuning, Transaction Processing, Key Management, Server Administration, Data Structures, Data Storage, Real Time Data, Data Management, Servers, Event-Driven Programming, Scalability, Scripting Languages, Software Architecture, Memory Management, Query Languages, Data Modeling
Beginner · Specialization · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Social Media Strategy, Social Media, Social Media Content, Media Planning, Social Media Marketing, Media Strategy, Social Media Management, Communication Planning, Strategic Communication, Paid media, Content Strategy, Digital Media Strategy, Earned Media, Owned Media, Content Marketing, Brand Strategy, Content Performance Analysis, Social Media Analytics, Content Creation, Brand Management
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Agentic Workflows, AI Orchestration, Generative AI Agents, AI Workflows, LLM Application, Agentic systems, Tool Calling, Context Management, AI Integrations, Data Persistence, Memory Management, Development Environment, Event-Driven Programming, Large Language Modeling, Software Architecture
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Embedded Systems, C (Programming Language), Embedded Software, Data Structures, Code Reusability, Memory Management, C and C++, Programming Principles, Data Management, Software Development
Intermediate · Guided Project · Less Than 2 Hours

Board Infinity
Skills you'll gain: LangGraph, AI Workflows, AI Orchestration, LLM Application, LangChain, CrewAI, Large Language Modeling, Agentic Workflows, Agentic systems, Application Deployment, Artificial Intelligence and Machine Learning (AI/ML), Context Management, Vector Databases, Memory Management, Performance Testing, Data Validation
Intermediate · Course · 1 - 4 Weeks