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: AI Orchestration, Prompt Patterns, AI Workflows, Agentic Workflows, AI Integrations, OpenAI API, Token Optimization, Test Script Development, Context Management, Code Reusability, Secure Coding, Memory Management, Authentications
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: MITRE ATT&CK Framework, Metasploit, Penetration Testing, Exploit development, Exploitation techniques, Threat Modeling, Cyber Security Assessment, Cybersecurity, Operating System Administration, Operating Systems, Hardening, Computer Security, Malware Protection, Vulnerability Assessments, Security Controls, Authorization (Computing), Identity and Access Management, Memory Management, Data Persistence, Computer Architecture
★ 4.1 (9) · Intermediate · Course · 1 - 3 Months

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, Infrastructure Security, Cyber Security Policies
★ 4.5 (8) · Intermediate · Course · 1 - 3 Months

Illinois Tech
Skills you'll gain: Virtualization, Virtualization and Virtual Machines, Virtual Machines, Data Storage, Virtual Networking, Data Storage Technologies, vSphere DRS & HA, Networking Hardware, Computing Platforms, Network Architecture, Infrastructure Architecture, IT Infrastructure, End User Training and Support, Capacity Management, Data Centers, Memory Management, Network Switches, Desktop Support, Endpoint Security, Computer Hardware
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Linux, Ubuntu, Linux Administration, Linux Servers, General Networking, Memory Management, Linux Commands, OS Process Management, Firewall, File Systems, Bash (Scripting Language), Network Security, Command-Line Interface, File Management, Unix Shell, Operating Systems, Systems Administration, Virtualization, Virtual Environment, Virtualization and Virtual Machines
Beginner · 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, Web Servers, Software Documentation, Scalability, Integrated Development Environments, Data Analysis, Maintainability, Network Protocols, Application Development, Authentications
★ 3.7 (28) · Intermediate · Specialization · 1 - 3 Months

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, Integrated Development Environments, Data Sharing, Data Access
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Hardening, Performance Tuning, Systems Analysis, Virtual Environment, Virtualization and Virtual Machines, Operating System Administration, Memory Management, End User Training and Support, Help Desk Support, Debugging, Service Management, User Accounts, OS Process Management, Scripting, Record Keeping, Cloud Deployment
★ 4.3 (12) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Eclipse (Software), Computer Programming, Development Environment, Integrated Development Environments, Programming Principles, Data Structures, Memory Management, Software Installation
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: Generative AI Agents, Agentic Workflows, Agentic systems, Generative AI, Prompt Engineering, Prompt Patterns, LLM Application, Systems Architecture, Tool Calling, Natural Language Processing, Context Management, Memory Management, Verification And Validation
Intermediate · Course · 1 - 4 Weeks

University of California, Santa Cruz
Skills you'll gain: C and C++, C++ (Programming Language), Object Oriented Programming (OOP), Memory Management, C (Programming Language), Algorithms, File I/O, Graph Theory, Data Structures, Secure Coding, Scaled Agile Framework
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Penetration Testing, Network Security, Cyber Operations, Network Monitoring, Exploitation techniques, Vulnerability Scanning, Cryptographic Protocols, Remote Access Systems, Network Protocols, Encryption, General Networking, Command-Line Interface, Network Analysis, Proxy Servers
★ 4.7 (14) · Intermediate · Course · 1 - 3 Months