Object Oriented Design courses can help you learn principles like encapsulation, inheritance, and polymorphism, along with design patterns such as Singleton and Factory. You can build skills in creating reusable code, improving software maintainability, and designing systems that are easier to understand and extend. Many courses introduce tools like UML for modeling, as well as programming languages such as Java and Python, which are commonly used to implement object-oriented concepts in real-world applications.

Skills you'll gain: WordPress, Web Design, Web Design and Development, Usability, Content Management Systems, Web Development, Performance Tuning, Project Design, Application Deployment, PHP (Scripting Language), Software Installation, Apache, Responsive Web Design, Development Environment, Web Development Tools, MySQL
Beginner · Course · 1 - 4 Weeks

University of Pennsylvania
Skills you'll gain: Computational Thinking, Algorithms, Program Development, Pseudocode, Problem Solving, Python Programming, Data Structures, Computer Hardware, Computer Programming, Object Oriented Programming (OOP), Analysis, Debugging
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Test Planning, Software Testing, Debugging, Test Case, Issue Tracking, Functional Testing, Unit Testing, Software Quality Assurance, System Testing, Test Tools, Acceptance Testing, Integration Testing, Test Driven Development (TDD), Test Automation, Regression Testing, Quality Assurance, Waterfall Methodology, Agile Methodology, Python Programming
Beginner · Course · 1 - 4 Weeks

École Polytechnique
Skills you'll gain: Peer Review, Journals, Scientific Methods, Research, Research Design, Proofreading, Research Methodologies, Editing, Ethical Standards And Conduct, Data Management
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Unity Engine, Debugging, User Interface (UI) Design, Game Design, Video Game Development, User Interface and User Experience (UI/UX) Design, 3D Assets, Program Development, Interaction Design, Scripting, C# (Programming Language)
Intermediate · Course · 1 - 3 Months

Skills you'll gain: React Native, Mobile Development, React Redux, Ajax, User Interface and User Experience (UI/UX) Design, Front-End Web Development, Javascript, React.js, Data Structures, Application Development, Apple iOS, Debugging, iOS Development, JavaScript Frameworks, User Story, Android Development, UI Components, Cross Platform Development, JSON, Flutter (Software)
Beginner · Specialization · 3 - 6 Months

Universidad de los Andes
Skills you'll gain: Energy and Utilities, Climate Change Mitigation, Sustainable Development, Sustainable Technologies, Electric Power Systems, Systems Analysis, Environmental Issue, Systems Thinking, Community Development, Simulations, Case Studies, Decision Support Systems, Transaction Processing, Artificial Intelligence, Machine Learning
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Scalability, Performance Tuning, .NET Framework, C# (Programming Language), System Programming, Application Performance Management, C (Programming Language), Debugging, Data Structures, Object Oriented Programming (OOP), Software Engineering, Interoperability
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Algorithms, Data Structures, Pseudocode, Computer Programming, Computational Thinking, Mathematical Theory & Analysis, Analysis, Analytical Skills
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Statistical Inference, Statistical Hypothesis Testing, Probability & Statistics, Probability, Statistics, Bayesian Statistics, Statistical Methods, Statistical Modeling, Statistical Analysis, Probability Distribution, Sampling (Statistics), Sample Size Determination, Data Analysis
Mixed · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Statistical Inference, Statistical Hypothesis Testing, Business Analytics, Sample Size Determination, Statistical Analysis, Data Analysis, Statistical Methods, A/B Testing, Statistical Software, Estimation, Data-Driven Decision-Making, Business Communication
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: AI Orchestration, AI Workflows, LangChain, Agentic Workflows, Tool Calling, LangGraph, LLM Application, Agentic systems, Generative AI Agents, Responsible AI, Retrieval-Augmented Generation, Artificial Intelligence and Machine Learning (AI/ML), Generative AI, Application Design, Prompt Engineering, Large Language Modeling, Context Management, Software Design Patterns, Software Development, Python Programming
Intermediate · Specialization · 1 - 3 Months