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: JUnit, Test Automation, Unit Testing, Java Programming, Java, Test Script Development, Verification And Validation, Test Tools, Software Testing, Test Execution Engine, Development Testing, Quality Assurance, Software Quality Assurance, System Testing, Application Development, Test Case, Data Validation, Application Design, Automation, Software Development
★ 4.9 (20) · Beginner · Specialization · 1 - 3 Months

Board Infinity
Skills you'll gain: Technical Writing, Technical Documentation, Software Documentation, Technical Communication, Layout Design, Writing and Editing, Writing, Collaborative Software, Graphic and Visual Design, Augmented and Virtual Reality (AR/VR), Typography, Proofreading, Multimedia, Content Management, GitHub, Version Control
★ 4.3 (448) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Authentications, Angular, API Design, Application Programming Interface (API), TypeScript, Frontend Integration, Restful API, Authorization (Computing), Web Development Tools, GraphQL, Secure Coding, Full-Stack Web Development, Node.JS, Application Design, Role-Based Access Control (RBAC), Enterprise Security, Enterprise Architecture, Software Architecture, Web Development, Javascript
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Plant Operations and Management, Building Codes, Quality Assurance, Construction Inspection, Verification And Validation, Manufacturing Processes, Construction, Manufacturing Operations, Facility Management and Maintenance, Mechanical Engineering, Construction Management, Chemical Engineering, Equipment Design, Manufacturing and Production, Production Process, Engineering Plans And Specifications, Construction Engineering, Process Control, Structural Engineering, General Construction and Construction Labor
Intermediate · Course · 1 - 4 Weeks

Vanderbilt University
Skills you'll gain: Retrieval-Augmented Generation, Agentic systems, Agentic Workflows, Generative AI Agents, AI Workflows, Prompt Engineering, ChatGPT, Artificial Intelligence, LLM Application, Prompt Patterns, OpenAI, Generative AI, Context Engineering, Large Language Modeling, AI literacy, Tool Calling, Multimodal Prompts, Strategic Planning, Emerging Technologies, Responsible AI
★ 4.7 (1.6K) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Routing Protocols, Firewall, Virtual Local Area Network (VLAN), Open Shortest Path First (OSPF), Virtual Networking, Network Security, TCP/IP, Network Routers, Virtual Private Networks (VPN), Network Infrastructure, Network Switches, Network Architecture, Network Administration, Dynamic Host Configuration Protocol (DHCP), Network Monitoring, Network Troubleshooting, Network Routing, Local Area Networks, Network Planning And Design, Network Performance Management
Intermediate · Course · 3 - 6 Months

SkillsBooster Academy
Skills you'll gain: Video Editing, Prompt Engineering, Model Context Protocol, Instructional Design, Storyboarding, Post-Production, Video Production, Photo/Video Production and Technology, AI Workflows, Developing Training Materials, Product Demonstration, Motion Graphics, Generative AI, Content Creation, Product Marketing, Artificial Intelligence, Employee Training, Content Marketing, Brand Marketing, Business Communication
Beginner · Course · 1 - 3 Months

University of Pennsylvania
Skills you'll gain: People Analytics, Human Resource Strategy, Human Resources Management and Planning, People Management, Human Resources, Workforce Planning, Talent Management, Organizational Effectiveness, Performance Metric, Workforce Management, Analytics, Performance Appraisal, Staff Management, Performance Measurement, Employee Performance Management, Data-Driven Decision-Making, Performance Analysis, Social Network Analysis, Performance Management, Collaboration
★ 4.6 (6.2K) · Mixed · Course · 1 - 4 Weeks

Sage Publications
Skills you'll gain: Research, Research Reports, Writing, Research Design, Journals, Research Methodologies
Beginner · Course · 1 - 3 Months

Skills you'll gain: Prompt Engineering, Agentic systems, Retrieval-Augmented Generation, Agentic Workflows, AI Workflows, Prompt Patterns, Responsible AI, Generative AI Agents, AI Security, AI Enablement, JSON, Generative AI, Artificial Intelligence and Machine Learning (AI/ML), Artificial Intelligence, Embeddings, AI Personalization, Application Programming Interface (API), Vector Databases, Knowledge Transfer, Integration Testing
Beginner · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Prompt Engineering, New Product Development, Model Based Systems Engineering, Model Evaluation, Generative AI, Financial Statement Analysis, Agile Project Management, Sustainable Business, Data Mining, Field-Programmable Gate Array (FPGA), Delegation Skills, Strategic Decision-Making, Real-Time Operating Systems, Object Oriented Design, Sampling (Statistics), Failure Analysis, Data Ethics, Goal Setting, Database Design, Data Visualization
Degree · 1 - 4 Years
Chris Croft Training
Skills you'll gain: Creative Problem-Solving, Creative Thinking, Brainstorming, Ideation, Creativity, Problem Solving, Innovation, Critical Thinking and Problem Solving, Cognitive flexibility, Open Mindset, Critical Thinking, Strategic Thinking, Independent Thinking, Thought Leadership, AI powered creativity, Collaboration, Creative Design, Initiative and Leadership, Leadership, Leadership and Management
Mixed · Course · 1 - 3 Months