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.

Packt
Skills you'll gain: System Programming, Memory Management, Linux Administration, Linux, Performance Tuning, OS Process Management, Operating Systems, Embedded Software, Real-Time Operating Systems, Linux Servers, System Software, Linux Commands, System Configuration, Operating System Administration, Debugging, C (Programming Language), Embedded Systems, Cross Platform Development, Open Source Technology, Hardware Architecture
Intermediate · Specialization · 3 - 6 Months

KodeKloud
Skills you'll gain: Memory Management, Back-End Web Development, Go (Programming Language), Code Reusability, Software Design Patterns, Computer Programming Tools, Data Store, Software Architecture, Data-oriented programming, Systems Design, Data Structures, System Programming, Programming Principles, Object Oriented Programming (OOP), Cloud Development, Computer Programming, Logical Reasoning, Programmable Logic Controllers, Application Development, Open Source Technology
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Java Programming, Java, Performance Tuning, Memory Management, Web Servers, Web Applications, Server Side, Computer Networking, TCP/IP, OS Process Management, Context Management, Software Development, Encryption, Network Protocols, Scalability, Maintainability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Java, Object Oriented Design, Java Programming, Maintainability, Software Design, Data Structures, Software Architecture, Memory Management, Programming Principles, Code Reusability, Data Management, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Linux Administration, System Programming, Linux, Embedded Software, Linux Servers, Linux Commands, System Software, System Configuration, Operating Systems, Debugging, Memory Management, Embedded Systems, Cross Platform Development, Open Source Technology, Secure Coding, Configuration Management, C (Programming Language), Hardening, Program Development, Development Environment
Intermediate · Course · 1 - 3 Months

Skills you'll gain: LangChain, Prompt Engineering, LangGraph, Prompt Patterns, Generative AI Agents, Generative AI, LLM Application, Generative Model Architectures, Prompt Engineering Tools, AI Workflows, Large Language Modeling, OpenAI, Image Analysis, Multimodal Prompts, Memory Management, Model Context Protocol, Python Programming, Agentic systems
Beginner · Course · 1 - 4 Weeks

University of Illinois Urbana-Champaign
Skills you'll gain: C++ (Programming Language), Object Oriented Programming (OOP), Object Oriented Design, Development Environment, Engineering Software, Computer Programming, Software Engineering, Data Structures, Memory Management, Computer Programming Tools, Debugging, Program Development
★ 4.7 (3K) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Unity Engine, User Interface (UI), Scripting, UI Components, Game Design, User Interface (UI) Design, Animation and Game Design, Interactive Design, Performance Tuning, User Interface and User Experience (UI/UX) Design, Video Game Development, Artificial Intelligence, Data Structures, C# (Programming Language), Animations, Model Optimization, Virtual Reality, Event-Driven Programming, Memory Management
Intermediate · Course · 1 - 3 Months

Amazon Web Services
Skills you'll gain: Generative AI Agents, Agentic Workflows, Context Engineering, LLM Application, Model Context Protocol, Agentic systems, Tool Calling, Generative AI, Context Management, Application Deployment, Cloud Deployment, Model Evaluation, Memory Management, Data Persistence
Beginner · Course · 1 - 3 Months

University of Pennsylvania
Skills you'll gain: Social Network Analysis, Social Media Strategy, Content Marketing, Social Media Content, Social Media Marketing, Shared Media, Consumer Behaviour, Driving engagement, Marketing Communications, Content Creation, Influencing, Social Media Campaigns, Persuasive Communication, Advertising, Marketing, Earned Media, Marketing Psychology, Promotional Strategies, Decision Making
★ 4.8 (5.3K) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: File I/O, Object Oriented Programming (OOP), Java, Integrated Development Environments, Object Oriented Design, Java Programming, Development Environment, Maintainability, Computer Programming Tools, Software Development Tools, Software Design, Data Structures, Program Development, Data Persistence, Software Architecture, Debugging, Memory Management, Code Reusability, Programming Principles, File Management
Beginner · Specialization · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: C++ (Programming Language), Data Structures, Object Oriented Programming (OOP), Object Oriented Design, Graph Theory, Development Environment, Data Storage, Engineering Software, Unstructured Data, Computer Programming, Software Engineering, Algorithms, Memory Management, Computer Programming Tools, Debugging, Program Development, Database Systems, Theoretical Computer Science
★ 4.7 (3.5K) · Intermediate · Specialization · 1 - 3 Months