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.

Simplilearn
Skills you'll gain: Search Engine Marketing, Google Ads, Search Engine Optimization, Digital Marketing, Performance marketing, Digital Advertising, Paid media, Campaign Management, Marketing Automation, Advertising Campaigns, Google Analytics, Keyword Research, Target Audience, Bidding
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Network Security, Open Shortest Path First (OSPF), Network Performance Management, Virtual Networking, Network Monitoring, Firewall, Network Planning And Design, Network Protocols, Infrastructure as Code (IaC), Terraform, Configuration Management, Encryption, System Configuration, Scalability
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: API Design, Restful API, Application Programming Interface (API), Application Deployment, Spring Boot, Spring Framework, Back-End Web Development, Data Modeling, Database Design, Software Architecture, Object-Relational Mapping, System Configuration, Data Persistence, Business Logic
Mixed · Course · 1 - 4 Weeks

Simplilearn
Skills you'll gain: Email Marketing, Target Audience, Lead Generation, Marketing Automation, Newsletters, Campaign Management, Driving engagement, Direct Marketing, Promotional Strategies, Digital Marketing, Content Marketing, Customer Relationship Management (CRM) Software, Customer Engagement, Sales, Automation, Law, Regulation, and Compliance
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Hypertext Markup Language (HTML), HTML and CSS, Cascading Style Sheets (CSS), Web Design, Web Design and Development, Git (Version Control System), Front-End Web Development, Browser Compatibility, Mobile Development, Javascript, Animations, User Interface (UI), Web Development Tools, Web Content Accessibility Guidelines, Typography, Semantic Web, GitHub, Version Control, Application Deployment, Development Environment
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Photo Editing, Instagram, Social Media Content, Social Media, Social Media Marketing, Content Creation, Marketing Design, Graphics Software, Graphical Tools, Marketing
Beginner · Guided Project · Less Than 2 Hours

Alfaisal University | KLD
Skills you'll gain: Conflict Management, Mediation, Problem Solving, Emotional Intelligence, Collaboration, Empathy, Active Listening, Communication
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Vector Databases, MongoDB, NoSQL, Applied Machine Learning, Apache Cassandra, Text Mining, Image Analysis, Node.JS, Database Application
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Computational Logic, System Requirements, Functional Requirement, Theoretical Computer Science, Systems Analysis, Verification And Validation, Control Systems, Linear Algebra, Differential Equations, Applied Mathematics
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Microsoft PowerPoint, Timelines, Product Roadmaps, Microsoft 365, Presentations, Technology Roadmaps, Milestones (Project Management), Project Schedules, Project Management, Business Process Management, Business Communication
Beginner · Guided Project · Less Than 2 Hours

The Hong Kong University of Science and Technology
Skills you'll gain: Search Engine Optimization, Web Analytics, Semantic Web, Performance Metric, Digital Marketing, Algorithms, Personalized Service, Text Mining, User Feedback, Natural Language Processing, User Research, Data Structures
Intermediate · Course · 3 - 6 Months

Universitat Politècnica de València
Skills you'll gain: SQL, Relational Databases, Database Management, Databases, Database Design, Database Architecture and Administration, Query Languages, Data Integrity, Secure Coding, Data Manipulation
Beginner · Course · 1 - 3 Months