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.

University of Toronto
Skills you'll gain: Diversity Awareness, Diversity and Inclusion, Innovation, Business Analytics, Analysis, Sociology, Market Opportunities, Social Justice, Case Studies, Human Centered Design, Leadership Development, Risk Mitigation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Selenium (Software), Java Programming, Java, Object Oriented Programming (OOP), Object Oriented Design, Eclipse (Software), Test Tools, File Management, Cascading Style Sheets (CSS), Test Automation, Computer Programming, Development Environment, Integrated Development Environments, Software Testing, Test Script Development, Web Scraping, Data Validation, Test Case, Web Development Tools, Data Structures
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Database Management, Databases, Relational Databases, Database Architecture and Administration, Data Security, User Accounts, Secure Coding, SQL, Application Security, Vulnerability Scanning, NoSQL, Role-Based Access Control (RBAC), Encryption, Data Manipulation
Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Cascading Style Sheets (CSS), Responsive Web Design, HTML and CSS, Web Design and Development, Front-End Web Development, Web Design, Computer Programming
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: File I/O, Object Oriented Programming (OOP), Debugging, JSON, Program Development, Data Structures, Code Review, Python Programming, Microsoft Visual Studio, Development Environment, Scripting, Maintainability, Integrated Development Environments, Package and Software Management, Authorization (Computing), Programming Principles, Computer Programming, Web Scraping, Application Programming Interface (API), Scalability
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Adobe XD, Prototyping, User Experience Design, Usability Testing, UI/UX Research, Figma (Design Software), Presentations, Responsive Web Design, Information Architecture, User Story, Storyboarding, User Research, Design, User Interface and User Experience (UI/UX) Design, Web Design, Persona (User Experience), User Centered Design, Data Ethics, Design Reviews, Usability
Beginner · Professional Certificate · 3 - 6 Months

DeepLearning.AI
Skills you'll gain: Multimodal Prompts, Gemini, Prompt Engineering, Google Gemini, Prompt Patterns, LLM Application, Generative AI, Application Programming Interface (API), Image Analysis
Beginner · Project · Less Than 2 Hours

Alex Genadinik
Skills you'll gain: Search Engine Optimization, Generative AI Agents, Video Production, Email Automation, Sales Strategy, Advertising, Inside Sales, AI Orchestration, Online Advertising, Marketing Channel, Marketing, Performance marketing, Product Promotion, AI Workflows, Marketing Strategies, Content Marketing, Entrepreneurship, Web Analytics, New Business Development, Agentic systems
Beginner · Specialization · 3 - 6 Months

AI CERTs
Skills you'll gain: Prompt Engineering, Prompt Engineering Tools, Prompt Patterns, Responsible AI, OpenAI, LLM Application, Generative AI, LangChain, Generative AI Agents, ChatGPT, Large Language Modeling, Vibe coding, Natural Language Processing, Artificial Intelligence, AI Personalization, Debugging, Ideation, Productivity, Code Review, Computer Programming Tools
Beginner · Course · 1 - 3 Months

Skills you'll gain: Microservices, Google Cloud Platform, Cloud Applications, Software Architecture, Cloud Development, Event-Driven Programming, Cloud-Based Integration, Serverless Computing, Service Oriented Architecture, Cloud Computing Architecture, Systems Architecture, Scalability
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Spring Boot, Hibernate (Java), Object-Relational Mapping, GitHub, Git (Version Control System), Java, Software Documentation, JUnit, Restful API, Application Performance Management, API Design, Model View Controller, Postman API Platform, User Accounts
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Product Lifecycle Management, Manufacturing and Production, Robotic Process Automation, Production Process, Automation, Enterprise Resource Planning, Supply Chain Management, Plant Operations and Management, Internet Of Things, Facility Management and Maintenance, Digital Transformation, Real Time Data, Augmented Reality
Intermediate · Course · 1 - 4 Weeks