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 Pennsylvania
Skills you'll gain: People Analytics, Human Capital, Human Resource Strategy, Human Resources, Talent Management, Organizational Effectiveness, Workforce Management, Analytics, Performance Measurement, Employee Performance Management, Data-Driven Decision-Making, Performance Analysis, Network Analysis, Employee Retention, Performance Management, Collaboration, Data Analysis, Predictive Analytics
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Portfolio Management, Financial Trading, Data Visualization Software, Dataflow, UI Components
Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Bioinformatics, Data Structures, Jupyter, Python Programming, Programming Principles, Object Oriented Programming (OOP), File I/O, Computational Logic, Package and Software Management, Data Manipulation
Mixed · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Content Marketing, Content Performance Analysis, Marketing Strategy and Techniques, Key Performance Indicators (KPIs), Search Engine Optimization, Strategic Marketing, Content Creation, Marketing Channel, Customer Insights, Writing, Marketing Analytics, Web Analytics and SEO, Social Media Campaigns, Scalability, Customer Engagement, Email Marketing, Brand Management, Marketing, Advertising Campaigns, Content Management
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Selenium (Software), Jenkins, Test Script Development, CI/CD, Continuous Integration, Test Automation, Apache Maven, DevOps, Automation, Continuous Delivery, Systems Administration, JUnit, Devops Tools, Scripting, Browser Compatibility, Scalability, Distributed Computing, Git (Version Control System), Debugging
Intermediate · Course · 1 - 4 Weeks
University of Illinois Urbana-Champaign
Skills you'll gain: MarTech, Data Architecture, Digital Marketing, Marketing Strategies, Marketing Effectiveness, AI Personalization, Marketing Analytics, Data-Driven Decision-Making, Blockchain, Customer Insights, Consumer Behaviour, Data Integrity, Image Analysis, Analytics, Data Governance, Generative AI, Performance Measurement
Build toward a degree
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Generative AI Agents, Agentic systems, Prompt Engineering, AI Workflows, LLM Application, Systems Architecture, Tool Calling, Natural Language Processing, Context Management, Debugging
Intermediate · 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

Skills you'll gain: AI Workflows, AI Orchestration, Agentic Workflows, Prompt Engineering, Generative AI Agents, AI Enablement, Agentic systems, AI Security, Prompt Patterns, Salesforce, Responsible AI, Artificial Intelligence, Application Lifecycle Management, Data Governance, Data Integration, Data Architecture, Automation, Business Requirements, Customer Relationship Management (CRM) Software, Data Security
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Relational Databases, Database Design, Databases, PostgreSQL, SQL, Database Management, Query Languages, Data Manipulation
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Computational Thinking, Program Development, Development Environment, C++ (Programming Language), C and C++, Computer Programming, Computer Programming Tools, File I/O, Debugging
Beginner · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Prompt Engineering, Responsive Web Design, Node.JS, Command-Line Interface, TypeScript, Unit Testing, SQL, HTML and CSS, Web Content Accessibility Guidelines, Typography, Cascading Style Sheets (CSS), Ajax, React.js, User Interface and User Experience (UI/UX) Design, Hypertext Markup Language (HTML), JavaScript Frameworks, JSON, Generative AI, Database Design, UI Components
Beginner · Specialization · 3 - 6 Months