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: Restful API, Software Quality (SQA/SQC), Java Programming, Test Automation, Java
★ 4.9 (60) · Beginner · Specialization · 1 - 3 Months

Edureka
Skills you'll gain: Rust (Programming Language), Memory Management, Application Programming Interface (API), Server Side, Code Reusability, Back-End Web Development, System Programming, Web Frameworks, Web Development, Other Programming Languages, Web Servers, Software Documentation, Scalability, Integrated Development Environments, Build Tools, Data Analysis, Maintainability, Network Protocols, Application Development
★ 3.7 (28) · Intermediate · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Model Deployment, Multi-Cloud, Cloud Security, AI Security, MLOps (Machine Learning Operations), DevSecOps, Cloud Management, Security Architecture Review, Microservices, Site Reliability Engineering, Security Controls, CI/CD, System Monitoring, Infrastructure as Code (IaC), Compliance Management, Automation, Kubernetes, Docker (Software), Incident Management, Performance Analysis
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Prompt Engineering, GitHub Copilot, AI Workflows, Generative AI, AI Integrations, Software Design, API Design, AI Security, Software Development, Automation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Microsoft 365, Microsoft Teams, Microsoft Outlook, Pivot Tables And Charts, Calendar Management, Excel Macros, Microsoft Copilot, Microsoft Excel, Collaborative Software, Excel Formulas, Data Validation, Productivity Software, Email Automation, Spreadsheet Software, Project Management Software, Organizational Skills, Collaboration, Presentations, Data Manipulation, Visual Basic (Programming Language)
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Technical Analysis, Financial Trading, Investment Management, Securities Trading, Market Trend, Financial Market, Market Data, Investments, Capital Markets, Financial Regulations, Equities, Risk Control, Order Entry, Financial Systems, Risk Management, Order Management, Trend Analysis, Financial Regulation, Market Dynamics, Business
★ 4.8 (13) · Mixed · Course · 1 - 3 Months

Skills you'll gain: Dashboard, Pivot Tables And Charts, Dashboard Creation, Excel Formulas, Statistical Analysis, Microsoft Excel, Excel Macros, Data Visualization, Performance Analysis, Key Performance Indicators (KPIs), Spreadsheet Software, People Analytics, Data Presentation, Human Resource Strategy, Business Analytics, Performance Measurement, Financial Analysis, Interactive Data Visualization, Trend Analysis, Human Resources
Beginner · Specialization · 3 - 6 Months

L&T EduTech
Skills you'll gain: Electrical Power, Electric Power Systems, Simulation and Simulation Software, Energy and Utilities, Electrical Systems, Power Electronics, Simulations, Sustainable Technologies, Semiconductors, Scalability, Electrical Equipment, Environmental Issue, Emerging Technologies, Materials science, Innovation, Cost Estimation
★ 3.1 (7) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Performance Analysis, Marketing Planning, Marketing Strategies, Strategic Marketing, Global Marketing, Performance Improvement, Product Marketing, Market Analysis, Product Strategy, Case Studies, Marketing, Competitive Analysis, Brand Marketing, Strategic Planning, Business Strategy, Market Opportunities, Logistics
★ 5 (12) · Mixed · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Brand Strategy, Data Storytelling, Data Presentation, Branding, Brand Marketing, Dashboard, Interactive Data Visualization, Dashboard Creation, Storytelling, Target Audience, Brand Management, Experience Design, Data-Driven Marketing, Digital Brand Strategy, Journey Mapping, Marketing Psychology, Brand Awareness, Design Strategies, Digital Advertising, Data Visualization
Beginner · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Agentic systems, Code Reusability, AI Integrations, Engineering Software, Systems Architecture, API Design, Systems Design, Solution Architecture, Artifactory, Generative Model Architectures, Release Management
Intermediate · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Node.JS, JSON, Server Side, Web Development Tools, Back-End Web Development, JavaScript Frameworks, Web Servers, Application Programming Interface (API), Restful API, Javascript, Web Development, Package and Software Management, Servers, Network Protocols
★ 4.5 (6) · Intermediate · Course · 1 - 4 Weeks