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.

EDUCBA
Skills you'll gain: Model View Controller, Java Platform Enterprise Edition (J2EE), Back-End Web Development, Server Side, Data Access, Apache Tomcat, Application Servers, Relational Databases, Databases, Java, Web Servers, SQL, Authentications, Web Applications, Secure Coding, Software Design Patterns, Data Persistence, Context Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Computer Hardware, SQL, Database Design, Hardware Troubleshooting, Databases, Computer Networking, Relational Databases, Network Protocols, Information Technology, Network Routers, Wireless Networks, System Configuration, Peripheral Devices
Beginner · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Google Cloud Platform, SQL, Big Data, Dashboard, Applied Machine Learning, Data Visualization Software, Data Visualization, Machine Learning, Data Access, Data Transformation, Data Integrity, Data Cleansing, Data Quality, Data Infrastructure, Data Analysis, Database Design, Data Preprocessing, Predictive Modeling, Exploratory Data Analysis, Data Integration
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Power BI, Data Analysis Expressions (DAX), Data Modeling, Star Schema, Data Warehousing, Data Security, Data Visualization Software, Pivot Tables And Charts, Performance Tuning, Business Intelligence, Excel Formulas, Role-Based Access Control (RBAC)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, Cascading Style Sheets (CSS), HTML and CSS, Javascript, Web Design, Event-Driven Programming, Web Design and Development, Development Environment, Web Development, User Interface and User Experience (UI/UX) Design, Web Applications, Interactive Design, Animations, Typography, Color Theory, Web Analytics and SEO, Debugging, Data Validation
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Rust (Programming Language), Data Structures, Package and Software Management, Maintainability, Algorithms, Software Testing, Unit Testing, Software Design Patterns, Development Testing
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Transformation, JSON, Data Preprocessing, Data Structures
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Canva (Software), Instagram, Social Media Content, Graphic Design, Graphic and Visual Design, Social Media Marketing, Organizational Skills, Marketing Design, Typography, Color Theory, Business Strategy
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Interactive Learning, Education Software and Technology, Digital pedagogy, Microsoft Office, Instructional Design
Beginner · Guided Project · Less Than 2 Hours

University of Michigan
Skills you'll gain: Statistics, Data Analysis, Statistical Programming, Descriptive Statistics, Exploratory Data Analysis, Python Programming
Intermediate · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Conflict Management, Emotional Intelligence, Mediation, Relationship Management, Teamwork, Negotiation, De-escalation Techniques, Collaboration, Leadership, Empathy, Leadership Development, Team Leadership, Organizational Leadership, Active Listening, Communication, Organizational Skills
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Point of Sale, Shipping and Receiving, Process Optimization
Beginner · Course · 1 - 4 Weeks