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 California, Irvine
Skills you'll gain: Pay Per Click Advertising, Search Engine Marketing, Customer Retention, Digital Marketing, Paid media, Search Engine Optimization, Online Advertising, Keyword Research, Conversion Funnel Analysis, Digital Marketing Campaigns, Digital Advertising, Marketing Strategy and Techniques, Content Optimization, Marketing, Customer Acquisition Management, Customer Engagement, Lead Generation, Target Audience, Target Market
★ 4.7 (117) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Continuous Delivery, Continuous Integration, Web Services, Application Programming Interface (API), Test Tools, Software Testing, Service Oriented Architecture, Test Execution Engine
★ 4.9 (10) · Beginner · Course · 1 - 4 Weeks

University of Washington
Skills you'll gain: GitHub, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Version Control, Git (Version Control System), HTML and CSS, Web Design and Development, Web Development, Web Development Tools, Web Design, Front-End Web Development, Web Content Accessibility Guidelines, Debugging, Semantic Web, Web Analytics and SEO, Command-Line Interface
★ 4.5 (16) · Beginner · Course · 1 - 4 Weeks

LearnKartS
Skills you'll gain: Meta Ads Manager, Content Creation, Facebook, Target Market, Social Media, Social Media Marketing, Social Media Content, Bidding, Online Advertising, Pay Per Click Advertising, Performance marketing, Social Media Campaigns, Content Scheduling, Pinterest, Advertising Campaigns, Social Media Strategy, Marketing, Brand Strategy, Social Media Management, Digital Advertising
★ 4.6 (9) · Beginner · Specialization · 3 - 6 Months

Vanderbilt University
Skills you'll gain: Model Context Protocol, Token Optimization, AI Workflows, Generative AI Agents, Agentic Workflows, AI Orchestration, Agentic systems, Tool Calling, Context Engineering, Artificial Intelligence and Machine Learning (AI/ML), AI Security, AI Enablement, Prompt Patterns, Prompt Engineering, ChatGPT, AI Personalization, AI Product Strategy, Anthropic Claude, Multimodal Prompts, Generative AI
★ 4.6 (17) · Beginner · Course · 1 - 3 Months

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Vibrations, Engineering Analysis, Engineering Calculations, Mathematical Modeling, Integral Calculus, Applied Mathematics, Differential Equations, Calculus
★ 4.7 (47) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Database Management Systems, NoSQL, Database Design, Systems Architecture, Transaction Processing
Intermediate · Course · 1 - 3 Months

University of California San Diego
Skills you'll gain: Diagnostic Tests, Bioinformatics, Computational Thinking, Model Evaluation, Molecular Biology, Infectious Diseases, Molecular, Cellular, and Microbiology, Medical Science and Research
★ 4.1 (10) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: MySQL Workbench, MySQL, Database Design, SQL, Database Development, Database Systems, Database Management, Relational Databases, Databases, Data Integration, Data Manipulation, Business Intelligence
★ 4.4 (31) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Video Game Development, Game Design, Programming Principles, Python Programming, Program Development, Computer Programming, Computational Logic, Computer Science
★ 4.6 (125) · Beginner · Guided Project · Less Than 2 Hours

Banco Interamericano de Desarrollo
Skills you'll gain: Project Design, Case Studies, Project Scoping, Risk Management, Project Risk Management, Risk Analysis, Project Planning, Project Management, Proposal Development, Scope Management, Community Development, Analysis, Social Impact, Procurement
★ 4.9 (91) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: IT Security Architecture, Security Controls, Cryptography, Security Engineering, Application Security, Vulnerability Assessments, Information Systems Security, Cryptographic Protocols, Encryption, Cybersecurity, Infrastructure Security, Computer Security, Threat Modeling, Network Security, Public Key Infrastructure, Key Management, Authentications, Data Integrity
★ 4.8 (12) · Intermediate · Course · 1 - 4 Weeks