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.

Scrimba
Skills you'll gain: React.js, Web Content Accessibility Guidelines, Game Design, Front-End Web Development, Application Programming Interface (API), User Interface (UI), Web Components, Usability, JavaScript Frameworks, Web Development Tools, Web Frameworks, Debugging, Web Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Internet Of Things, General Networking, Wireless Networks, Cybersecurity, Systems Integration, Interoperability, Emerging Technologies, Software Development Life Cycle, Safety and Security, Systems Development Life Cycle, Systems Design, Automation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: GitHub, API Testing, Test Script Development, Test Case, Eclipse (Software), Verification And Validation, Extensible Markup Language (XML)
Intermediate · Course · 3 - 6 Months

Google Cloud
Skills you'll gain: Image Analysis, Model Evaluation, Generative AI, Convolutional Neural Networks, Deep Learning, Embeddings, Vision Transformer (ViT)
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Apple iOS, Swift Programming, User Interface and User Experience (UI/UX) Design, User Interface (UI), Apple Xcode, Data Modeling, UI Components, Mobile Development, Authentications, Debugging, Data Storage Technologies, Data Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Application Deployment, Cloud Deployment, UI Components, React.js, User Interface (UI) Design, JavaScript Frameworks, Web Design and Development, Cascading Style Sheets (CSS), Front-End Web Development, Content Management Systems, Amazon S3
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Strategic Decision-Making, Corporate Strategy, Business Strategies, Business Strategy, Business Ethics, Strategic Planning, Growth Strategies, Strategic Thinking, Organizational Strategy, Environmental Social And Corporate Governance (ESG), Strategic Prioritization, Business Planning, Operational Efficiency, Business Process Reengineering, Organizational Effectiveness, Operational Analysis, Corporate Sustainability, Competitive Analysis, Market Share, Portfolio Management
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Animations, 3D Modeling, 3D Assets, Computer Graphics, Computer Graphic Techniques, Visualization (Computer Graphics), Prototyping, User Interface (UI), Linear Algebra, Programming Principles, Scripting, Simulations, Computational Logic, Scripting Languages, Graphical Tools, Data Structures
Beginner · Specialization · 3 - 6 Months

Skillshare
Skills you'll gain: Photo Editing, Photography, Image Quality, Typography, Editing, Graphic and Visual Design, Post-Production, Color Theory, Storytelling, Automation, File Management
Beginner · Specialization · 3 - 6 Months

EDUCBA
Skills you'll gain: Authentications, Application Frameworks, Web Applications, Web Development, Network Routing, Information Architecture, Unit Testing, Authorization (Computing), Middleware, Development Testing, Functional Testing, Application Security, Configuration Management, File Management
Advanced · Course · 1 - 3 Months
University of Illinois Urbana-Champaign
Skills you'll gain: Digital Media Strategy, Customer Relationship Management (CRM) Software, Digital Marketing, Online Advertising, Email Marketing, Marketing Strategies, Campaign Management, Social Media Strategy, Social Media Marketing, Search Engine Optimization, Marketing Effectiveness, Marketing Communications, Web Analytics and SEO, Marketing, Copywriting, Advertising, Integrated Marketing Communications, Mobile Security, Key Performance Indicators (KPIs)
Mixed · Course · 1 - 4 Weeks

Starweaver
Skills you'll gain: Responsible AI, AI Security, LLM Application, Threat Detection, Endpoint Detection and Response, Threat Modeling, Cyber Threat Intelligence, Cyber Threat Hunting, Generative AI Agents, Agentic Workflows, Agentic systems, Cyber Governance, Incident Response, Cyber Security Strategy, Data Ethics, Cyber Operations, Cybersecurity, Cyber Security Assessment, Risk Mitigation, Technology Strategies
Intermediate · Course · 1 - 3 Months