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: Penetration Testing, Application Security, Secure Coding, Exploitation techniques, Software Design Patterns, Vulnerability Assessments, Amazon Web Services, SQL, Operating Systems, C (Programming Language)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Presentations, Productivity Software, Multimedia, Business Correspondence, Data Visualization, Business Communication, Content Creation, User Accounts, Graphic Design, Business Development
Beginner · Guided Project · Less Than 2 Hours

Advancing Women in Tech
Skills you'll gain: Product Roadmaps, Product Management, Customer Retention, Financial Analysis, Product Development, Product Lifecycle Management, Product Strategy, Innovation, Revenue Management, Financial Statements, Agile Methodology, Customer experience strategy (CX), Key Performance Indicators (KPIs), Continuous Improvement Process
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Object Oriented Programming (OOP), Unity Engine, Video Game Development, Event-Driven Programming, C# (Programming Language), User Interface (UI), Scripting, Animations, Debugging
Intermediate · Course · 1 - 4 Weeks

American Psychological Association
Skills you'll gain: Institutional Review Board (IRB), Research, Scientific Methods, Ethical Standards And Conduct, Research Design, Data Collection, Research Methodologies, Informed Consent, Psychology, Research and Design, Cultural Diversity
Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Restful API, ASP.NET, Model View Controller, JSON, API Design, Web Services, Middleware, Back-End Web Development, Server Side, Extensible Markup Language (XML)
Intermediate · Course · 1 - 4 Weeks

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

Illinois Tech
Skills you'll gain: Database Design, Relational Databases, Database Systems, Database Management, Database Theory, Databases, Database Development, SQL, Database Management Systems, MySQL, Transaction Processing, Stored Procedure, Database Architecture and Administration, Data Modeling, Unified Modeling Language, Data Access, Data Integrity, Query Languages, Diagram Design, Application Development
Build toward a degree
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Unity Engine, UI Components, Scripting, User Interface (UI), Torque (Physics), Responsive Web Design, User Interface (UI) Design, Object Oriented Programming (OOP), C# (Programming Language), Game Design, Animation and Game Design, Animations, Interactive Design, Usability, Video Game Development, Mechanics, Simulations, Mathematical Modeling, Physics, Debugging
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Key Performance Indicators (KPIs), Power BI, Dashboard, Data Visualization, Interactive Data Visualization, Data Storytelling, Data Presentation, Business Metrics, Performance Analysis, Data Visualization Software, Data Import/Export, Business Intelligence, Regional Sales, Sales Presentation
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Computational Thinking, Algorithms, Graph Theory, Data Structures, Computer Programming, C++ (Programming Language), Object Oriented Programming (OOP)
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Excel Macros, Microsoft Excel, Data Analysis Expressions (DAX), Excel Formulas, Visual Basic (Programming Language), Productivity Software, Data Transformation, Debugging, Spreadsheet Software, Data Cleansing, Automation, Strategic Decision-Making, Programming Principles
Beginner · Course · 1 - 4 Weeks