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.

John Wiley & Sons
Skills you'll gain: Object Oriented Design, Java Programming, Java, Object Oriented Programming (OOP), Data Persistence, Software Design Patterns, Maintainability, Memory Management, Programming Principles, Code Reusability, Functional Design, Computer Programming, Oracle Databases, File Systems, Computational Logic, API Design, Data Structures, Software Design, File Management, Data Management
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Embedded Software, Embedded Systems, System Programming, Cross Platform Development, System Software, Memory Management, Hardware Architecture, Peripheral Devices, Product Family Engineering, Code Reusability, Performance Tuning, Software Design, C (Programming Language), Scalability
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Development Environment, Java, Integrated Development Environments, Key Management, Software Development Tools, Cryptographic Protocols, Encryption, Cryptography, Performance Tuning, Memory Management, Scalability, Software Installation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Model Context Protocol, OpenAI API, Retrieval-Augmented Generation, OpenAI, Generative AI Agents, Agentic Workflows, Embeddings, ChatGPT, Agentic systems, Vector Databases, Generative AI, Artificial Intelligence, Memory Management, Context Management, Model Evaluation, Application Programming Interface (API), Python Programming, Document Management, Scalability, Application Deployment
Intermediate · Course · 1 - 4 Weeks

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

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

Skills you'll gain: Security Testing, Test Tools, Vulnerability Scanning, Exploitation techniques, Vulnerability Assessments, Application Security, Network Protocols, Web Applications, Test Automation, Development Environment, Proxy Servers, Authentications, Software Installation, System Configuration
Beginner · Course · 1 - 3 Months

SkillUp
Skills you'll gain: Dynamic Host Configuration Protocol (DHCP), Remote Access Systems, Windows Servers, iSCSI Configuration, Virtual Private Networks (VPN), Microsoft Servers, Microsoft Windows, Network Administration, Microsoft Azure, Network Infrastructure, Public Key Infrastructure, Data Storage Technologies, Infrastructure As A Service (IaaS), Data Storage, Network Security, Cloud Storage, Hybrid Cloud Computing, Proxy Servers, File Management, File Systems
★ 5 (8) · Intermediate · Course · 1 - 4 Weeks

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: Data Maintenance, Linux Administration, Operating System Administration, Database Software, Event Monitoring, Database Management Systems, Linux Commands, File I/O, Data Migration, Performance Testing, Data Storage Technologies, Scenario Testing, Memory Management, Data Storage, Software Installation
Intermediate · Specialization · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Campaign Planning, Campaign Management, Advertising Campaigns, Communication Planning, Paid media, Promotions and Campaigns, Program Evaluation, Content Performance Analysis, Strategic Communication, Media Planning, Marketing Communications, Earned Media, Program Implementation, Marketing Effectiveness, Communication Strategies, Owned Media, Plan Execution, Marketing, Public Relations, Business Communication
★ 4.7 (6) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Rust (Programming Language), ChatGPT, Authentications, Generative AI Agents, Back-End Web Development, Web Servers, OpenAI API, AI Orchestration, Databases, Server Side, Web Applications, Agentic Workflows, AI Integrations, Command-Line Interface, AI Workflows, Package and Software Management, Agentic systems, API Testing, Memory Management, Development Environment
Intermediate · Specialization · 1 - 3 Months