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: 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

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: Predictive Modeling, Data Preprocessing, Django (Web Framework), Data Visualization, Plot (Graphics), Predictive Analytics, Statistical Visualization, Model Training, Model Evaluation, File I/O, Application Programming Interface (API), Programming Principles, Databases, Development Environment, Web Applications, Code Reusability, Data Management, Functional Design, Memory Management, Data Validation
Intermediate · Specialization · 3 - 6 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
★ 4.8 (6) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Memory Management, C and C++, Computational Thinking, Data Access
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Rust (Programming Language), OpenAI API, Generative AI Agents, Package and Software Management, Memory Management, Development Environment, LLM Application, Large Language Modeling, Unit Testing, Agentic systems, Software Documentation, Software Installation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Retrieval-Augmented Generation, LLM Application, Database Management Systems, Memory Management, Analysis
Intermediate · Course · 1 - 3 Months

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Computer Architecture, Hardware Architecture, Computer Systems, Computer Engineering, System Programming, Memory Management, File Systems, Data Access, Cloud Platforms
Intermediate · Course · 1 - 3 Months

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: Security Testing, Penetration Testing, Open Web Application Security Project (OWASP), Vulnerability Scanning, Application Security, Exploitation techniques, Vulnerability Assessments, Test Tools, Web Applications, Proxy Servers, SQL
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Computer Hardware, Hardware Architecture, Peripheral Devices, Networking Hardware, USB, Data Storage, System Configuration, Computer Networking, Local Area Networks, Data Storage Technologies, Display Devices, General Networking, Memory Management
Intermediate · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: System Programming, Rust (Programming Language), Data Structures, Memory Management, Relational Databases, Other Programming Languages, Databases, Data Access, C (Programming Language), Programming Principles, Application Development, Code Reusability, Object Oriented Programming (OOP), C++ (Programming Language), Interoperability, Systems Integration, File I/O, Command-Line Interface, Program Development, Software Development
★ 3.9 (8) · Beginner · Specialization · 1 - 3 Months