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.

Board Infinity
Skills you'll gain: Apple iOS, Apple Xcode, iOS Development, Core Data (Software), Secure Coding, Application Deployment, Scalability, Swift Programming, Performance Tuning, Application Security, Debugging, Application Performance Management, Application Programming Interface (API), Performance Testing, Encryption, JSON
Intermediate · Course · 1 - 4 Weeks

University of Colorado Boulder
Skills you'll gain: Mathematics Education, Education Software and Technology, Pedagogy, Digital pedagogy, Simulation and Simulation Software, Web Content Accessibility Guidelines, Interactive Design, File Management
Beginner · Course · 1 - 3 Months

Skills you'll gain: Amazon Elastic Compute Cloud, Amazon Web Services, Cloud Hosting, Front-End Web Development, React.js, Javascript, Web Development Tools, Full-Stack Web Development, Web Applications, Cloud Security, Hypertext Markup Language (HTML)
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Photo Editing, Photography, Image Quality, Color Theory, Color Matching, Editing, Graphic and Visual Design, Computer Graphic Techniques
Beginner · Specialization · 3 - 6 Months
Skills you'll gain: Generative AI Agents, HubSpot CRM, Sales Enablement, Customer Relationship Management (CRM) Software, Sales Process, Business Process Automation, Sales Management, Lead Generation, Workflow Management, AI Workflows, Agentic Workflows, Process Analysis, Sales, Automation, Data Entry, AI Enablement, Business Process Modeling, Data Management
Intermediate · Course · 1 - 4 Weeks

AI CERTs
Skills you'll gain: Policy Development, Governance, Data Governance, Data Strategy, Public Policies, Policy Analysis, Regulatory Requirements, Governance Risk Management and Compliance, Artificial Intelligence, Economics, Policy, and Social Studies, Artificial Intelligence and Machine Learning (AI/ML), Market Dynamics, Generative AI, Generative AI Agents, Accountability
Beginner · Course · 1 - 3 Months

Alex Genadinik
Skills you'll gain: Proposal Writing, Proposal Development, Sales Process, Enterprise Sales, Business Writing, B2B Sales, Sales Presentation, Business Marketing, Specialized Sales, Presentations, Company, Product, and Service Knowledge, Target Audience
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: React.js, Bootstrap (Front-End Framework), Web Applications, UI Components, Full-Stack Web Development, Web Development Tools, Authentications, Front-End Web Development, HTML and CSS, Cascading Style Sheets (CSS), Authorization (Computing), Application Programming Interface (API), User Interface (UI), Javascript, Microsoft Azure, Network Routing, Event-Driven Programming, User Interface (UI) Design, Data Validation, Debugging
Intermediate · Specialization · 3 - 6 Months

Board Infinity
Skills you'll gain: Mindfulness, Resilience, Emotional Intelligence, Compassion, Communication, Personal Development, Stress Management, Personal Care, Self-Awareness, Empowerment, Mental Health, Persistence, Goal Setting
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Test Case, Test Automation, Test Data, Functional Testing, Test Execution Engine, CI/CD, System Testing, Software Testing, No-Code Development, Debugging
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: PHP (Scripting Language), Web Applications, Server Side, Hypertext Markup Language (HTML), Web Development, Web Servers, Scripting, Scripting Languages, Development Environment, Programming Principles, Data Validation
Mixed · Course · 1 - 4 Weeks

University of Lausanne
Skills you'll gain: Health Systems, Systems Thinking, Health Policy, Public Health, Model Based Systems Engineering, Community Health, Simulation and Simulation Software, Systems Engineering, Systems Analysis, Mathematical Modeling, Sustainable Systems, Environmental Policy
Intermediate · Course · 1 - 3 Months