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.

Skills you'll gain: Unity Engine, User Interface (UI), Game Design, Android (Operating System), C# (Programming Language), 3D Assets, Video Game Development, Application Deployment, Virtual Environment, Augmented and Virtual Reality (AR/VR), Software Installation, Development Environment, Animations
Intermediate · Course · 1 - 3 Months

Universitat Politècnica de València
Skills you'll gain: Sustainable Architecture, Systems Thinking, Architectural Engineering, Sustainable Systems, Architectural Design, Sustainable Design, Building Design, Architecture and Construction, Civil and Architectural Engineering, Sustainable Development, Landscape Architecture, Environmental Engineering, Sustainable Engineering, Structural Analysis, Environmental Regulations, Policty Analysis, Research, and Development, Environment and Resource Management, Materials science, Thermal Management
Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Salesforce Development, Salesforce, Systems Integration, Data Integration, Web Services, Integration Testing, Application Programming Interface (API), Software Design Patterns, Restful API, Complex Problem Solving, Business Solutions
Beginner · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Web Development Tools, Javascript, Cross Platform Development, Web Applications, Node.JS, Web Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Software Design Patterns, Computational Thinking, Software Design, Algorithms, Program Development, Software Development, Data Structures, Problem Solving, Computer Science, Machine Learning Methods
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: iOS Development, Swift Programming, Apple iOS, Application Development, Mobile Development, User Interface (UI) Design, Software Architecture, Portfolio Management, Human Computer Interaction, Interactive Design, Usability, Software Design, Application Design, Software Design Patterns, Secure Coding, Object Oriented Programming (OOP), Financial Trading, Data Visualization Software, Application Lifecycle Management, Maintainability
Beginner · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: DeepSeek API, Deepseek, Retrieval-Augmented Generation, Model Deployment, AI Enablement, Make.com, Generative Model Architectures, LLM Application, Cloud Deployment, Embeddings, Software Documentation, Unit Testing, Key Management
Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Cascading Style Sheets (CSS), Responsive Web Design, HTML and CSS, Typography, Web Design, Maintainability, Debugging, User Interface (UI), Semantic Web, Color Theory
Intermediate · Course · 1 - 4 Weeks

AI CERTs
Skills you'll gain: Policy Development, Governance, Data Governance, Data Strategy, Public Policies, Policy Analysis, Regulatory Requirements, Governance Risk Management and Compliance, Artificial Intelligence, Economics, Policy, and Social Studies, Artificial Intelligence and Machine Learning (AI/ML), Market Dynamics, Generative AI, Generative AI Agents, Accountability
Beginner · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Hypertext Markup Language (HTML), HTML and CSS, Web Design and Development, Front-End Web Development, Web Development, Web Applications
Beginner · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Teradata SQL, Exploratory Data Analysis, SQL, Data Modeling, Database Design, Database Administration, Database Architecture and Administration, Database Management, Database Management Systems, Data Store, JSON, Data Integration, Data Architecture, Advanced Analytics, Data Warehousing, Data Cleansing, Text Mining, Data Analysis, Business Intelligence, Data-Driven Decision-Making
Beginner · Specialization · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: R Programming, Statistical Analysis, Statistical Programming, Data Analysis, Probability, Probability Distribution, Applied Machine Learning, Probability & Statistics, Applied Mathematics, Data Science, Computational Thinking, Simulations
Intermediate · Course · 1 - 3 Months