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.

Board Infinity
Skills you'll gain: Cascading Style Sheets (CSS), HTML and CSS, Hypertext Markup Language (HTML), Responsive Web Design, Bootstrap (Front-End Framework), Web Design, Web Development, Front-End Web Development, User Interface and User Experience (UI/UX) Design, UI Components, Typography
Beginner · Course · 1 - 4 Weeks

University at Buffalo
Skills you'll gain: Electrical Systems, Electrical Wiring, HVAC, Building Design, Construction Inspection, Basic Electrical Systems, Engineering Calculations, Architectural Design, System Requirements, Mechanical Design, Building Codes, Structural Analysis, Cost Estimation
Intermediate · Course · 1 - 3 Months

Coursera
Skills you'll gain: Newsletters, Email Marketing, Project Design, Content Creation, Scheduling, Test Tools, User Accounts, Marketing, Communication
Intermediate · Guided Project · Less Than 2 Hours
Skills you'll gain: Responsible AI, AI Workflows, AI Orchestration, Agentic systems, Generative AI Agents, Artificial Intelligence, Coordination, AI Security, Data Ethics, Governance, Systems Architecture, Software Architecture, Scalability, Regulatory Compliance, Communication Strategies, Communication
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: AI Workflows, OpenAI API, LLM Application, OpenAI, Model Context Protocol, Generative AI Agents, Agentic systems, Tool Calling, Prompt Engineering, ChatGPT, Artificial Intelligence, Application Programming Interface (API), User Interface (UI), Context Management, Large Language Modeling, Python Programming, Development Environment, Application Deployment, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Computer Graphics, Application Development, Visualization (Computer Graphics), Software Design, C++ (Programming Language), Microsoft Windows, Software Architecture, Application Lifecycle Management, Context Management, System Configuration, Debugging
Mixed · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Test Case, Test Script Development, Test Planning, Test Automation, Test Engineering, Acceptance Testing, Test Tools, White-Box Testing, CI/CD, Software Quality Assurance, Test Data, Regression Testing, Quality Assurance
Beginner · Course · 1 - 4 Weeks

Ball State University
Skills you'll gain: Cryptography, Application Security, Encryption, Authentications, Cybersecurity, Data Encryption Standard, Advanced Encryption Standard (AES), Email Security, Network Security, Information Systems Security, Key Management, Application Development, Public Key Infrastructure, Data Integrity
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Photo Editing, Photography, Design, Design Elements And Principles, Layout Design, Graphic and Visual Design, Content Creation, Storytelling
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Design, Graphic and Visual Design, Photography, Photo Editing, Photo/Video Production and Technology
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Prompt Engineering, Brainstorming, Email Automation, AI Enablement, Concision, Large Language Modeling, Business Writing, Productivity, Organizational Skills
Beginner · Course · 1 - 4 Weeks

Northeastern University
Skills you'll gain: Data Storytelling, Exploratory Data Analysis, Data Visualization, Data Visualization Software, Data Presentation, Interactive Data Visualization, Infographics, Tableau Software, Dashboard, Data Analysis, Data-Driven Decision-Making, Data Ethics, Trend Analysis, Business Analytics, Peer Review
Beginner · Course · 1 - 4 Weeks