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: Full-Stack Web Development, Responsive Web Design, Email Automation, Order Management, UI Components, Payment Processing, Data Validation, Order Processing, User Interface (UI) Design, Web Design and Development, Search Engine Optimization, Web Applications, JavaScript Frameworks, Authentications, React.js, E-Commerce, Order Delivery, Web Analytics and SEO, PostgreSQL, Credit/Debit Card Processing
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Reconciliation, QuickBooks (Accounting Software), Spreadsheet Software, Accounting Records, Investigation, Variance Analysis, Financial Statements, Accounts Payable, Financial Controls, Fraud detection, Analysis, Billing & Invoicing, Verification And Validation, Payment Processing
Beginner · Course · 1 - 4 Weeks

Edureka
Skills you'll gain: Model Context Protocol, AI Orchestration, AI Workflows, Model Deployment, AI Personalization, OpenAI API, OpenAI, AI Integrations, Cloud Deployment, Agentic Workflows, Agentic systems, Application Deployment, Generative AI Agents, Cloud API, ChatGPT, CI/CD, Responsible AI, Artificial Intelligence, Generative AI, Development Testing
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Secure Coding, .NET Framework, Data Validation, Business Logic, Database Design, Web Development, Database Development, C# (Programming Language), Verification And Validation, Relational Databases, Billing & Invoicing, Databases, User Interface (UI), Program Development, Billing, Database Application, Development Testing, Software Testing, Application Design, Web Design and Development
Beginner · Specialization · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Database Management, Database Architecture and Administration, Apache Hadoop, Database Theory, Query Languages, Database Management Systems, Big Data, Databases, SQL, Data Access, Distributed Computing, Data Processing, Data Integrity, Authorization (Computing), Data Storage Technologies, File Systems, Algorithms
Intermediate · Course · 1 - 4 Weeks

Alex Genadinik
Skills you'll gain: Debugging, Vibe coding, Prototyping, Mobile Development, Mobile Development Tools, Application Development, AI Product Strategy, AI literacy, Integrated Development Environments, Persona (User Experience), Application Deployment, User Interface (UI) Design, User Interface (UI)
Mixed · Course · 1 - 4 Weeks

Università di Napoli Federico II
Skills you'll gain: Team Building, Teamwork, Team Oriented, Telecommuting, English Language, Business Communication, Collaborative Software, Business Correspondence, Communication, Virtual Teams, Business Writing, Verbal Communication Skills, Language Competency, Workforce Development, Adult Education, Organizational Skills, digital literacy, Digital Transformation, Business Transformation, Problem Solving
Beginner · Course · 1 - 3 Months

Simplilearn
Skills you'll gain: HubSpot CRM, Customer Relationship Management (CRM) Software, Customer Relationship Management, Online Advertising, Keyword Research, Promotional Strategies, Promotions and Campaigns, Social Media Marketing, Advertising Campaigns, Marketing Strategies, Driving engagement, Customer Acquisition Management, Product Promotion, Search Engine Optimization, Performance Metric, Customer Engagement, Content Optimization, User Feedback, Business Metrics
Beginner · Course · 1 - 4 Weeks

Birla Institute of Technology & Science, Pilani
Skills you'll gain: Android Jetpack, Mobile Development Tools, Extensible Markup Language (XML), Data Management, Application Programming Interface (API)
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Javascript, User Experience Design, User Experience, Web Applications, ChatGPT, Web Development, HTML and CSS, Application Programming Interface (API), Prompt Engineering, Real Time Data, Generative AI
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Prompt Engineering, Data-Driven Marketing, Personalized Campaigns, Prompt Engineering Tools, Prompt Patterns, Marketing Automation, Marketing Operations, AI Personalization, Marketing Effectiveness, Content Marketing, Campaign Planning, Social Media Campaigns, Content Performance Analysis, Marketing Strategies, Agentic Workflows, Marketing Analytics, Customer Relationship Management (CRM) Software, Customer Relationship Management, Data-Driven Decision-Making, Driving engagement
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: GitHub, Version Control, Bootstrap (Front-End Framework), .NET Framework, Model View Controller, Microsoft Visual Studio, Cross Platform Development, Microsoft Development Tools, Development Environment, Authentications, Git (Version Control System), Web Applications, OAuth, C# (Programming Language), jQuery, Software Development Tools, Software Versioning, Responsive Web Design, Web Design and Development, Object-Relational Mapping
Beginner · Course · 1 - 3 Months