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.

Skills you'll gain: Open Web Application Security Project (OWASP), SonarQube, Threat Modeling, Secure Coding, Application Security, Security Testing, DevSecOps, Code Review, Maintainability, Vulnerability Scanning, Software Quality (SQA/SQC), Risk Mitigation, Software Quality Assurance, MITRE ATT&CK Framework, Vulnerability Assessments, Cyber Security Assessment, Software Technical Review, Continuous Integration, Vulnerability Management, Cyber Attacks
Intermediate · Specialization · 1 - 3 Months

AI CERTs
Skills you'll gain: Business Research, AI literacy, Market Research, Analytical Skills, Business Intelligence, Decision Intelligence, Market Analysis, Trend Analysis, Market Intelligence, Data Analysis, Forecasting, AI Integrations
Beginner · Course · 1 - 3 Months

Coursera
Skills you'll gain: User Story, Backlogs, Product Roadmaps, Sprint Planning, Agile Product Development, Product Planning, Agile Methodology, Prioritization, Product Development, Product Strategy
Beginner · Guided Project · Less Than 2 Hours

Peking University
Skills you'll gain: Epidemiology, Public Health and Disease Prevention, Health Policy, Public Health, Research Design, Research Methodologies, Research, Medical Science and Research, Health Promotion, Preventative Care, Social Determinants Of Health, Statistical Analysis, Risk Analysis
Beginner · Course · 1 - 3 Months

Skills you'll gain: Canva (Software), Content Creation, Social Media Content, Social Media, Instagram, Design, Social Media Marketing, Graphic Design, Digital Design, Organizational Skills, Facebook, Video Production
Intermediate · Guided Project · Less Than 2 Hours

LearnKartS
Skills you'll gain: Agentic systems, Generative AI Agents, Front-End Web Development, Google Gemini, Model Context Protocol, AI Integrations, OpenAI API, Artificial Intelligence, Frontend Performance, Frontend Integration, ChatGPT, LLM Application, TypeScript, Generative AI, Web Applications, Software Architecture, Node.JS, User Interface and User Experience (UI/UX) Design, Data Integration, Machine Learning
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Product Design, Product Management, Interviewing Skills, Case Studies, Oral Expression, Stakeholder Communications, Portfolio Management, Verbal Communication Skills, User Research, Estimation, Product Knowledge, Storytelling, Technical Communication, Communication, Analysis, Complex Problem Solving, Data Analysis, Data-Driven Decision-Making
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Technical Documentation, Graphic and Visual Design
Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Agile Methodology, Program Management, Diagram Design, Agile Project Management, Solution Delivery, Process Flow Diagrams, Program Development, Project Management, Program Implementation, Process Mapping, Process Management, Process Analysis
Intermediate · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Storytelling, Case Studies, Canva (Software), Information Architecture, Digital Design, Visual Storytelling, Digital Publishing, Portfolio Management, Target Audience, Design Strategies, Layout Design, User Experience Design, Graphic and Visual Design, Critical Thinking and Problem Solving
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Disaster Recovery, Remote Access Systems, File Systems, Data Access, Data Storage, File Management, Data Sharing, Network Planning And Design, Distributed Computing, Computer Networking, Servers, Network Protocols, System Configuration, Open Source Technology
Intermediate · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Market Research, Data-Driven Decision-Making, Consumer Behaviour, Business Research, Customer Analysis, Marketing Psychology, Market Analysis, Marketing, Marketing Planning, Data-Driven Marketing, Behavioral Economics, Target Market, Customer Insights, Marketing Strategy and Techniques, Strategic Marketing, Technology Strategies, Product Lifecycle Management, Business-To-Consumer, B2B Sales, Digital Marketing
Build toward a degree
Beginner · Course · 1 - 3 Months