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.

University of Colorado Boulder
Skills you'll gain: Penetration Testing, Exploit development, Exploitation techniques, Unix, Cyber Operations, Computer Security, Unix Commands, Unix Shell, System Programming, Linux, Debugging, Command-Line Interface, Linux Commands, Memory Management, Remote Access Systems
Intermediate · Course · 1 - 3 Months

Edureka
Skills you'll gain: Rust (Programming Language), Memory Management, Application Programming Interface (API), Server Side, Code Reusability, Back-End Web Development, System Programming, Web Frameworks, Web Development, Other Programming Languages, Web Servers, Software Documentation, Scalability, Integrated Development Environments, Build Tools, Data Analysis, Maintainability, Network Protocols, Application Development
★ 3.7 (28) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Embedded Software, Embedded Systems, Pseudocode, Microarchitecture, Hardware Architecture, Computer Architecture, Software Design, System Programming, Systems Design, Software Design Patterns, Systems Integration, Programming Principles, Event-Driven Programming, Program Development, Real Time Data, Peripheral Devices, Memory Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Mapping, Memory Management, Exploit development, Web Applications, Computational Logic, Code Reusability, Authorization (Computing), Software Development Tools, Security Controls, Other Programming Languages, Program Development, Data Storage
★ 4.8 (12) · Intermediate · Specialization · 1 - 3 Months

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

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, Data Access, Scripting Languages, Software Architecture, Memory Management, Query Languages
★ 4.9 (18) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: OpenAI API, LLM Application, OpenAI, Agentic Workflows, Model Context Protocol, Generative AI Agents, Agentic systems, Decision Intelligence, Tool Calling, Prompt Engineering, ChatGPT, AI Integrations, Artificial Intelligence, Application Programming Interface (API), Context Management, Large Language Modeling, Python Programming, Memory Management, Development Environment, Application Deployment
Intermediate · 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

Skills you'll gain: Peripheral Devices, Hardware Troubleshooting, Desktop Support, Computer Hardware, Technical Support, System Requirements, System Configuration, Display Devices, Issue Tracking, Patch Management, Data Storage, Usability, Memory Management
Beginner · Course · 1 - 4 Weeks

Pearson
Skills you'll gain: Linux Administration, Containerization, Linux, Memory Management, Linux Commands, OS Process Management, File Systems, System Programming, Operating Systems, Data Storage, Cloud Storage, Data Storage Technologies, General Networking, Network Administration, Performance Tuning, System Configuration, C (Programming Language), Git (Version Control System)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: File I/O, Object Oriented Programming (OOP), C and C++, C++ (Programming Language), Data Structures, Object Oriented Design, Code Reusability, Memory Management, Data Persistence, Algorithms
★ 4.8 (10) · Advanced · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Network Security, Network Monitoring, Firewall, Google Cloud Platform, Cloud Security, Intrusion Detection and Prevention, Identity and Access Management, Proxy Servers, Network Administration, Threat Detection, Virtual Networking, Cyber Security Policies
★ 4.6 (9) · Intermediate · Course · 1 - 3 Months