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 Colorado System
Skills you'll gain: Scrum (Software Development), Agile Methodology, Systems Engineering, Risk Management, Lean Methodologies, Software Development Methodologies, Scalability, Sprint Retrospectives, Agile Project Management, Systems Development Life Cycle, Team Management, Waterfall Methodology, Sprint Planning, Backlogs
Intermediate · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Event-Driven Programming, User Interface (UI), Software Design, UI Components, User Interface (UI) Design, Application Design, Development Environment, Cross Platform Development, Application Development, Data Entry
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Internet Of Things, Network Protocols, Computer Networking, Wireless Networks, Information Systems Security, Cybersecurity, Real-Time Operating Systems, Emerging Technologies, Software-Defined Networking, Cryptography, Cloud Platforms, Encryption, Market Dynamics, Operational Efficiency
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cloud Applications, Cloud-Native Computing, Cloud Development, Google Cloud Platform, Microservices, Application Development, Application Design, Data Store, Cloud Storage, Cloud Services, Data Storage, Node.JS, Scalability
Intermediate · Course · 1 - 3 Months

Skills you'll gain: User Experience Design, Adobe Creative Cloud, User Experience, Application Design, Design, Graphic and Visual Design
Beginner · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Data Entry, Data Visualization, Spreadsheet Software, Data Literacy, Data Science, Business Writing
Beginner · Guided Project · Less Than 2 Hours

Michigan State University
Skills you'll gain: Video Editing, Creative Thinking, Multimedia, Cognitive flexibility, Photo Editing, Music, Storytelling, Brainstorming, Critical Thinking, Aesthetics, Systems Thinking, Communication
Beginner · Course · 1 - 3 Months

Skills you'll gain: Go (Programming Language), Package and Software Management, Data Structures, Debugging, Software Testing, Programming Principles, Unit Testing, Object Oriented Programming (OOP), File Management, Performance Tuning, Software Design Patterns, Context Management, Embeddings
Beginner · Course · 1 - 4 Weeks

University of Lausanne
Skills you'll gain: Health Systems, Systems Thinking, Health Policy, Public Health, Model Based Systems Engineering, Community Health, Simulation and Simulation Software, Systems Engineering, Systems Analysis, Mathematical Modeling, Sustainable Systems, Environmental Policy
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Unreal Engine, Video Game Development, Game Design, Animation and Game Design, Computer Literacy, 3D Assets
Beginner · Guided Project · Less Than 2 Hours

Packt
Skills you'll gain: Team Management, Team Building, Business Ethics, Corporate Sustainability, Personal Development, Sustainable Business, Financial Controls, Leadership Development, Culture Transformation, Organizational Leadership, Business Strategy, Governance, Entrepreneurship, Resilience, Business Leadership, Self-Awareness, Leadership, Business Operations, Entrepreneurial Finance, Growth Strategies
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Canva (Software), Instagram, Social Media Content, Social Media, Social Media Marketing, Organizational Skills, Content Creation, Graphic Design, Graphic and Visual Design, Color Theory, Typography, Marketing
Beginner · Guided Project · Less Than 2 Hours