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.

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

Skills you'll gain: Graph Theory, Data Structures, Algorithms, Computer Programming, Computational Thinking, Memory Management, Software Visualization, Performance Tuning
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Spring Framework, Model View Controller, Java Platform Enterprise Edition (J2EE), Application Performance Management, Software Design Patterns, Java Programming, Java, Enterprise Architecture, Enterprise Application Management, Software Design, System Monitoring, Security Controls, Software Architecture, Application Security, Maintainability, Application Frameworks, Secure Coding, OS Process Management, Memory Management, Data Sharing
Intermediate · Specialization · 3 - 6 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

Edureka
Skills you'll gain: Memory Management, Other Programming Languages, Code Reusability, Programming Principles, Integrated Development Environments, Build Tools, Web Development, System Programming, Maintainability
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: C and C++, C++ (Programming Language), File I/O, Object Oriented Programming (OOP), Object Oriented Design, Programming Principles, Computer Programming, Data Structures, Memory Management, Algorithms
Beginner · Course · 1 - 4 Weeks

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

Board Infinity
Skills you'll gain: Java Programming, Java, OS Process Management, Memory Management, Data Sharing
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Target Audience, Target Market, Facebook, Earned Media, Persona Development, Customer Analysis, Owned Media, Social Media Marketing, Social Media Content, Business Marketing, Social Media, Business Planning, Drive Engagement, Marketing Planning, Digital Marketing
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Swift Programming, Apple Xcode, Apple iOS, iOS Development, Apple software proficiency, Application Development, Memory Management, Cross Platform Development, Mobile Development, UI Components, Data Store, Animations, Data Storage Technologies, Object Oriented Programming (OOP), Performance Tuning, Programming Principles, Data Persistence, Data Storage, Cloud Storage, Dataflow
Beginner · Specialization · 3 - 6 Months

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

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