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: Search Engine Optimization, Web Analytics and SEO, Keyword Research, Content Performance Analysis, Web Content, Digital Marketing, Content Development and Management, Social Media Strategy, Performance Metric, Digital Media Strategy, Performance Analysis, Strategic Planning
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: React Redux, React Native, React.js, Application Development, Scalability, Data Validation, UI Components, Web Applications, Mobile Development, Data Persistence, Business Logic, Application Design, Front-End Web Development, Software Design, Authentications, User Interface (UI), User Experience Design, User Interface and User Experience (UI/UX) Design, User Interface (UI) Design, Node.JS
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: JUnit, Test Automation, Unit Testing, Software Testing, Verification And Validation, Test Case, Test Driven Development (TDD), Integration Testing, Debugging, Mockups
Mixed · Course · 1 - 4 Weeks

AI CERTs
Skills you'll gain: Responsible AI, Predictive Modeling, Data Analysis, Research, AI Product Strategy, Statistical Analysis, Data Preprocessing, Data Science, Research Methodologies, AI Enablement, Artificial Intelligence, Artificial Intelligence and Machine Learning (AI/ML), Generative AI Agents, Generative AI, Research and Design, Research Reports, Ethical Standards And Conduct, Qualitative Research, Emerging Technologies
Intermediate · Course · 1 - 3 Months

Workday
Skills you'll gain: Workday (Software), No-Code Development, Branding
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: C# (Programming Language), Software Architecture, .NET Framework, Distributed Computing, Scalability, Object Oriented Programming (OOP), Object-Relational Mapping, Microservices, Debugging, MongoDB, Data Access, Model View Controller, Performance Tuning, Computer Programming, Maintainability, NoSQL
Intermediate · Course · 1 - 4 Weeks

DeepLearning.AI
Skills you'll gain: Computer Vision, Tensorflow, Image Analysis, Transfer Learning, Convolutional Neural Networks, Keras (Neural Network Library), Deep Learning, Classification Algorithms, Model Evaluation, Visualization (Computer Graphics), Network Architecture
Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Microsoft Power Platform, Excel Formulas, Process Flow Diagrams, Business Process Modeling, User Story, Business Requirements, Stakeholder Management, Data Modeling, Microsoft Excel, Requirements Analysis, Software Development Life Cycle, Requirements Elicitation, Quality Management, Diagram Design, Pivot Tables And Charts, Microsoft Visio, Power BI, Microsoft Power Automate/Flow, Business Analysis, Data Analysis
Beginner · Professional Certificate · 3 - 6 Months

PracticalGrowth
Skills you'll gain: Succession Planning, Employee Retention, Recognizing Others, Talent Management, Team Performance Management, Employee Engagement, Team Building, Team Leadership, People Management, Workforce Planning, Professional Development, Workforce Management, Employee Coaching, Interviewing Skills, Capacity Management, Dashboard, Mentorship
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: Model Evaluation, Decision Tree Learning, Data Preprocessing, Classification Algorithms, Applied Machine Learning, Java, Predictive Modeling, Machine Learning Software, Supervised Learning, Technical Communication, Feature Engineering, Tree Maps, MLOps (Machine Learning Operations), Machine Learning Algorithms, Machine Learning, Algorithms
Advanced · Course · 1 - 4 Weeks

Vanderbilt University
Skills you'll gain: Claude Code, Prompt Engineering, Model Context Protocol, ChatGPT, Prompt Patterns, Anthropic Claude, AI Workflows, Ideation, Verification And Validation, Prompt Engineering Tools, LLM Application, Generative AI Agents, Multimodal Prompts, Agentic Workflows, AI Orchestration, AI Enablement, Generative AI, Agentic systems, AI Security, Artificial Intelligence and Machine Learning (AI/ML)
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: jQuery, Javascript and jQuery, Responsive Web Design, HTML and CSS, Web Design and Development, Software Testing, Front-End Web Development, User Interface (UI) Design, Web Development Tools, Event-Driven Programming, Web Development, Hypertext Markup Language (HTML), Usability, Maintainability
Beginner · Specialization · 1 - 3 Months