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.

Coursera
Skills you'll gain: Ajax, JSON, Javascript, Frontend Integration, Application Programming Interface (API), Restful API, Web Applications, Application Security, Debugging
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Canva (Software), Storyboarding, Color Theory, Graphic Design, Graphic and Visual Design, Organizational Skills, Design, Storytelling, Marketing
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Hypertext Markup Language (HTML), Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, Web Development Tools, Web Design, Development Environment, Web Design and Development, Web Content Accessibility Guidelines, Front-End Web Development, Web Development, Web Content, Semantic Web, Integrated Development Environments, Typography
Beginner · Course · 1 - 3 Months

EDUCBA
Skills you'll gain: MySQL, Database Design, Python Programming, User Interface (UI) Design, UI Components, Database Application, Database Management, Software Design, Application Development, Data Access
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: AI Enablement, OpenAI, Development Environment, Game Design, Agentic systems, Web Scraping
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Crisis Management, Systems Thinking, Stakeholder Communications, Disaster Recovery, Leadership, Contingency Planning, Leadership and Management, Resilience, Business Continuity, Communication, Risk Analysis, Systems Engineering, Complex Problem Solving, Decision Making, Organizational Change, Organizational Strategy, Corporate Strategy, Systems Analysis
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Web Content Accessibility Guidelines, Test Automation, Usability, Human Centered Design, Usability Testing, User Interface (UI), Agile Product Development, UI/UX Strategy, Front-End Web Development, Software Testing, CI/CD
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Java Programming, Development Environment, Java, Integrated Development Environments, Encryption, Cryptography, Virtualization and Virtual Machines, Performance Tuning, Application Programming Interface (API), Object Oriented Programming (OOP), Scalability
Intermediate · Course · 1 - 3 Months

Skills you'll gain: User Experience Design, Usability, User Experience, User Interface and User Experience (UI/UX) Design, Threat Modeling, UI/UX Strategy, Interaction Design, Application Security, Authentications, Human Centered Design, Security Strategy, Usability Testing, Authorization (Computing), Security Controls, Multi-Factor Authentication, Security Awareness, Computer Security Awareness Training, Cybersecurity, Safety Standards, Information Privacy
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Animation and Game Design, Animations, Video Game Development, User Interface (UI) Design, Computer Graphic Techniques, Visualization (Computer Graphics), Game Design, Python Programming, Computer Graphics, Image Analysis, Program Development, Peripheral Devices, Debugging
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Semiconductors, Production Process, Manufacturing Processes, Quality Assurance, Electronics, Technical Design, Materials science, Computer-Aided Design, Emerging Technologies
Intermediate · Course · 1 - 4 Weeks

L&T EduTech
Skills you'll gain: Construction Engineering, Construction, Civil Engineering, Equipment Design, Structural Engineering, Safety Standards, Maintenance, Repair, and Facility Services, Construction Management, Safety Assurance, Mechanical Engineering, Facility Management and Maintenance, Hydraulics
Advanced · Course · 1 - 4 Weeks