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: Engineering Design Process, Engineering Analysis, Mechanical Design, Simulation and Simulation Software, Structural Analysis, Mechanical Engineering, Numerical Analysis, Finite Element Methods, Materials science
Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Java Programming, Java, Object Oriented Programming (OOP), Mathematical Software, Performance Tuning
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Data Visualization Software, Scientific Visualization, Interactive Data Visualization, Geospatial Information and Technology, Data Presentation, Color Theory, Graphic and Visual Design, Data Visualization, Tree Maps, Visualization (Computer Graphics), Data Storytelling, Design Elements And Principles, Plot (Graphics), Data Literacy, Heat Maps, Computer Displays, Exploratory Data Analysis, Time Series Analysis and Forecasting, Data Mapping, Display Devices
Intermediate · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: jQuery, Javascript, Web Applications
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Javascript, Web Development, Angular, Vue.JS, Application Development, React.js, Web Applications, JSON, Event-Driven Programming, Object Oriented Programming (OOP), Programming Principles, Computer Programming, Data Structures, Software Engineering, Functional Design, Computer Science
Intermediate · Course · 1 - 3 Months

Skills you'll gain: ISO/IEC 27001, Auditing, Audit Planning, Security Controls, Security Management, Information Systems Security, Information Assurance, Risk Management, Risk Management Framework, Security Strategy, Security Requirements Analysis, Identity and Access Management, Security Awareness, Information Technology
Intermediate · Course · 1 - 3 Months

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Chemical Engineering, Energy and Utilities, Chemical and Biomedical Engineering, Engineering, Process Engineering, Thermal Management, Environmental Engineering, Sustainable Engineering, Engineering Calculations, Mathematical Modeling
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Unit Testing, Test Case, Application Deployment, Responsive Web Design, Test Driven Development (TDD), Continuous Deployment, Debugging, Maintainability, LinkedIn, Cascading Style Sheets (CSS), Front-End Web Development, Software Testing, Code Review, Development Testing, Interviewing Skills, Web Development Tools, HTML and CSS, Web Development, Application Development, Software Documentation
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Intrusion Detection and Prevention, Continuous Monitoring, Threat Management, Firewall, Incident Response, Network Security, Threat Detection, Network Monitoring, Information Systems Security, Infrastructure Security, Cybersecurity
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Network Architecture, Wireless Networks, Emerging Technologies, Network Planning And Design, Cloud Engineering, Telecommunications, Internet Of Things, Artificial Intelligence and Machine Learning (AI/ML), Technology Strategies, Real Time Data
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Node.JS, Full-Stack Web Development, User Interface (UI), Application Deployment, MongoDB, Angular, Back-End Web Development, Front-End Web Development, User Interface (UI) Design, Web Design, Web Applications, JavaScript Frameworks, Restful API, Secure Coding, Authentications, Authorization (Computing), Scalability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Canva (Software), Social Media, Infographics, Social Media Marketing, Content Creation, Graphics Software, Graphic and Visual Design, Graphic Design, Design Elements And Principles, Creative Design, Design
Beginner · Guided Project · Less Than 2 Hours