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.

Coursera
Skills you'll gain: Graphic and Visual Design Software, Graphical Tools, Logo Design, Graphic Design, Digital Design, Graphic and Visual Design, Creative Design, Collaborative Software, Marketing Materials, Design Software, Advertising, Organizational Skills, Marketing, Color Theory
Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: Test Driven Development (TDD), Unit Testing, Test Planning, Debugging, Browser Compatibility, Performance Testing, Security Testing, Software Testing, System Testing, Test Script Development, Behavior-Driven Development, API Testing, Code Coverage, Integration Testing, Development Testing, Test Case, Test Automation, Continuous Delivery, Software Development Tools, Site Reliability Engineering
Intermediate · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: Software Documentation, Engineering Documentation, Technical Documentation, Model Training, Software Design Documents, Technical Writing, Generative Model Architectures, Technical Communication, Restful API
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Retrieval-Augmented Generation, Vector Databases, Agentic systems, Fine-tuning, Agentic Workflows, AI Workflows, CrewAI, Embeddings, Model Optimization, Model Context Protocol, Software Installation
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Amazon Web Services, Cloud Security, Cloud-Native Computing, Amazon Elastic Compute Cloud, Cloud Computing Architecture, Cloud Management, Cloud Solutions, Cloud Platforms, Cloud Standards, Cloud Deployment, Cloud Computing, Cloud Infrastructure, Cloud Services, Serverless Computing
Beginner · Course · 1 - 4 Weeks

HubSpot Academy
Skills you'll gain: Sales Management, Sales Enablement, Sales Process, Sales Training, Employee Onboarding, Sales Strategy, Employee Coaching, New Hire Orientations, Training Programs, Team Performance Management, Management Training And Development, Process Design, Team Management, Employee Training, Target Audience, Process Development, Recruitment, Consumer Behaviour, Recruitment Strategies, Goal Setting
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: SketchUp (3D Modeling Software), 3D Modeling, Visualization (Computer Graphics), Editing, Model Evaluation, Design Software, Graphical Tools, Software Installation, User Interface (UI)
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Angular, Responsive Web Design, HTML and CSS, Web Design and Development, JavaScript Frameworks, Web Applications, Hypertext Markup Language (HTML)
Beginner · Guided Project · Less Than 2 Hours

Johns Hopkins University
Skills you'll gain: Responsible AI, Social Media Analytics, Social Network Analysis, Data Ethics, Driving engagement, Social Impact, Behavioral Economics, Network Analysis, Game Design, Digital Analysis, AI literacy, Social Sciences, Artificial Intelligence, Systems Thinking, Data Collection, Psychology
Intermediate · Course · 1 - 3 Months

University of Pittsburgh
Skills you'll gain: Web Services, Cloud Computing, Cloud Computing Architecture, Cloud Storage, Cloud Development, Cloud Applications, Google Cloud Platform, Flask (Web Framework), Distributed Computing, Containerization, Systems Architecture, Software Architecture, Docker (Software), Cloud-Based Integration, Virtualization, Restful API, JSON, Microservices, Application Programming Interface (API), Computer Architecture
Build toward a degree
Intermediate · Course · 1 - 3 Months

Skills you'll gain: AI powered creativity, Adobe Firefly, Adobe Photoshop, Photo Editing, Image Quality, Photography, Photo/Video Production and Technology, Generative AI, Editing, Digital Design, Image Analysis
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Event Management, Events and Conferences, Event Planning, Event Marketing, Strategic Planning, Business Planning, Marketing Planning, Target Audience, Performance Measurement, Operational Analysis, Drive Engagement, Coordinating, Project Management, Communication Planning, Campaign Planning, Strategic Decision-Making, Campaign Management, Customer Analysis, Driving engagement, Target Market
Mixed · Course · 1 - 3 Months