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.

Codio
Skills you'll gain: Model View Controller, Test Driven Development (TDD), Restful API, Vue.JS, Full-Stack Web Development, Frontend Integration, Web Applications, Unit Testing, Server Side, Javascript, HTML and CSS, Cascading Style Sheets (CSS), User Interface (UI)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Sales Enablement, Sales Management, Customer Analysis, Sales Strategy, Marketing, Target Market, Verbal Communication Skills, Sales Process, Sales, Business Transformation, Smart Goals, Return On Investment, Leadership, Organizational Change
Mixed · Course · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Data Lakes, Microsoft Azure, Stored Procedure, Data Architecture, Performance Tuning, Data Management, Query Languages, Data Manipulation, Scripting, SQL, Data Processing, Windows PowerShell, Microsoft Visual Studio, Command-Line Interface, Heat Maps
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Canva (Software), Style Guides, Data Import/Export, Video Editing, Content Creation, Photo Editing, Branding, Animations, Graphic and Visual Design, Design Elements And Principles, Typography, Marketing
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Development Environment, Scalability, Performance Tuning
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Javascript, JSON, Event-Driven Programming, Web Development, Programming Principles, Web Applications, Data Structures, Application Deployment, Application Development, Debugging
Beginner · Course · 1 - 3 Months

Skills you'll gain: Presentations, Proposal Development, Proposal Writing, Value Propositions, Sales Presentations, Solution Sales Engineering, Collaborative Software, Collaboration, Meeting Facilitation
Beginner · Guided Project · Less Than 2 Hours

University of Colorado System
Skills you'll gain: Systems Engineering, Verification And Validation, Systems Architecture, Configuration Management, Systems Development, Systems Development Life Cycle, Systems Design, Reliability, Risk Management, Risk Management Framework, Systems Analysis, Systems Integration, Requirements Analysis, Maintainability
Intermediate · Course · 1 - 4 Weeks

Amazon Web Services
Skills you'll gain: Call Center Experience, Performance Metric, Inbound Calls, Outbound Calls, End User Training and Support, Self Service Technologies, Process Design
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Unreal Engine, Animation and Game Design, Animations, 3D Assets, User Interface (UI), Creativity
Mixed · Course · 1 - 4 Weeks
Skills you'll gain: Spring Framework, Software Architecture, Microservices, Spring Boot, Cloud Applications, Event-Driven Programming, Java Programming, Restful API, Performance Tuning, MongoDB, Web Applications, Scalability, Real Time Data, Resilience, Integration Testing, Performance Management, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Blockchain, Game Design, Investments, Test Automation, Digital Assets, Investment Management, Unit Testing, Development Testing, Cryptography, Key Management, Program Development, Emerging Technologies, Return On Investment, General Finance, FinTech, Payment Systems, Software Development, Web Development Tools, Asset Management, Development Environment
Beginner · Course · 3 - 6 Months