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 Colorado Boulder
Skills you'll gain: Simulations, Mathematics Education, Science and Research, Conceptual Design, User Feedback
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Apache Hive, Big Data, JSON, Case Studies, Apache Hadoop, People Analytics, Policty Analysis, Research, and Development, Analytics, Data Analysis, Social Sciences, Data Wrangling, Data-Driven Decision-Making, Data Preprocessing, Data Processing, Business Analytics, Data Manipulation, Data Transformation, Query Languages, Debugging, Demography
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Flask (Web Framework), Restful API, Software Testing, Databases, Software Quality (SQA/SQC), JSON, Application Programming Interface (API), MongoDB, Full-Stack Web Development, Web Applications, NoSQL, Back-End Web Development, Python Programming, Maintainability, Application Deployment, Data Validation, Authentications
Beginner · Course · 1 - 3 Months

Skills you'll gain: Swift Programming, Apple iOS, Apple Xcode, UI Components, Mobile Development, Apple software proficiency, Application Design, User Interface (UI), Figma (Design Software), Integrated Development Environments, Color Theory, User Interface (UI) Design, API Design, Data Sharing, Animations, Debugging
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Marketing Management, Digital Marketing, Market Analysis, Branding
Mixed · Course · 1 - 3 Months

Skills you'll gain: Value Propositions, Collaborative Software, Business Modeling, Project Design, Customer experience strategy (CX), Productivity Software, Process Development, Customer Analysis
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Unity Engine, Video Game Development, Game Design, Computer Programming, General Mathematics, Computer Graphics, Arithmetic, Graphing, Geometry, Data Structures, Applied Mathematics
Beginner · Course · 1 - 4 Weeks
Skills you'll gain: AI Security, Mobile Security, Model Deployment, Mobile Development, Continuous Monitoring, Application Security, Threat Modeling, Apple iOS, Security Requirements Analysis, System Monitoring, Encryption, Threat Management, Security Management, Information Privacy, Program Implementation
Intermediate · Course · 1 - 4 Weeks

AI CERTs
Skills you'll gain: Cyber Threat Intelligence, Cyber Security Strategy, Encryption
Advanced · Course · 1 - 3 Months

Skills you'll gain: Integrated Development Environments, Computer Networking, Server Side, Real Time Data, Data Analysis Expressions (DAX), Application Development
Mixed · Course · 1 - 3 Months

Skills you'll gain: Test Tools, Browser Compatibility, Software Testing, Test Automation, Continuous Integration, Cloud Applications, CI/CD, Regression Testing, Mobile Development Tools, Cloud Platforms, Verification And Validation, Quality Assurance, UI Components, User Interface (UI), Automation, Scalability
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Modeling, Query Languages, Data Mapping, NoSQL, Relational Databases, Scalability, Performance Tuning, JSON, Data Validation, Event Monitoring
Mixed · Course · 1 - 4 Weeks