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.

American Psychological Association
Skills you'll gain: Descriptive Statistics, Data Literacy, Graphing, Statistical Visualization, Statistical Hypothesis Testing, Probability & Statistics, Statistical Inference, Quantitative Research, Statistics, Statistical Analysis, Statistical Methods, Descriptive Analytics, Sample Size Determination, Data Analysis, Sampling (Statistics), Exploratory Data Analysis, Science and Research, Psychology, Bayesian Statistics, Research Design
★ 4.6 (67) · Beginner · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Test Planning, Test Tools, Software Testing, Configuration Management, Test Case, Software Configuration Management, Test Automation, Software Development Life Cycle, Software Technical Review, Code Review, Software Quality Assurance, White-Box Testing, Test Engineering, Risk Management, Risk Management Framework, Verification And Validation, Quality Assurance, Issue Tracking, Human Factors
★ 4.4 (106) · Beginner · Specialization · 1 - 3 Months

American Council on Exercise
Skills you'll gain: Health And Wellness Coaching, Mindfulness, Chronic Diseases, Stress Management, Nutrition Education, Coaching, Social Determinants Of Health, Patient-centered Care, Cognitive Behavioral Therapy, Overcoming Obstacles, Motivational Interviewing, Mental and Behavioral Health, Nutrition and Diet, Exercise Science, Ethical Standards And Conduct, Behavior-Driven Development, Client Support, Goal Setting, Smart Goals, Diversity and Inclusion
★ 4.4 (23) · Beginner · Professional Certificate · 3 - 6 Months

University of Colorado Boulder
Skills you'll gain: Systems Thinking, Stakeholder Management, Stakeholder Communications, Cross-Functional Collaboration, Planning, Project Planning, Cross-Functional Team Leadership, Strategic Leadership, Strategic Thinking, Business Leadership, Team Building, Community Outreach, Business Systems, Community Development, Problem Solving, Project Management, Organizational Strategy, Relationship Building, Root Cause Analysis, Communication Strategies
★ 4.4 (182) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Spring Boot, Application Development, API Testing, Java Programming, Web Development, Program Development, Application Frameworks, Software Testing, Test Case, Secure Coding, Development Environment, Model View Controller, Software Development Tools, UI Components, Data Access, Authentications, SQL, Object Oriented Programming (OOP), Data Persistence, User Interface (UI)
★ 4.7 (19) · Intermediate · Specialization · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Responsible AI, AI Product Strategy, Stakeholder Engagement, Stakeholder Management, Team Performance Management, Project Management, Project Risk Management, Human Capital, Data Ethics, Workforce Management, Risk Mitigation, Project Management Life Cycle, Agile Methodology, Risk Analysis, Artificial Intelligence, Team Management, Team Building, Scalability, Diversity Training, Budget Management
★ 4.5 (49) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Network Architecture, Emerging Technologies, Internet Of Things, Network Security, Network Protocols, Wireless Networks, Network Performance Management, Network Planning And Design, Network Engineering, Communication Systems, Mobile Security, Network Infrastructure, Cybersecurity, Telecommunications, Artificial Intelligence and Machine Learning (AI/ML), Vulnerability Assessments, Distributed Computing, Technology Strategies, Digital Signal Processing
★ 4.6 (65) · Intermediate · Specialization · 1 - 3 Months

Coursera
Skills you'll gain: SQL, Data Manipulation, Relational Databases, Database Management, Database Software, Database Design, Databases, Data Integrity, Database Management Systems, Debugging, Data Management
★ 4.6 (199) · Intermediate · Guided Project · Less Than 2 Hours

Skills you'll gain: HVAC, Building Services Engineering, Thermal Management, Mechanical Engineering, Engineering, System Requirements, Engineering Calculations, Energy and Utilities, Engineering Analysis, Estimation, Environmental Issue
★ 4.3 (60) · Intermediate · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: Systems Development, Systems Development Life Cycle, Agile Methodology, Software Development Life Cycle, Productivity Software, Risk Management Framework, Agile Project Management, Data Security, Software Design, Systems Design, Risk Management, Software Development Methodologies, Information Technology, Information Systems, Project Risk Management, Systems Analysis, Computer Systems, Enterprise Risk Management (ERM), Business Systems Analysis, Microsoft Excel
★ 4.7 (43) · Beginner · Course · 1 - 4 Weeks

University of Alberta
Skills you'll gain: Scientific Methods, Science and Research, General Science and Research, Research Methodologies, Research, Research Design, Peer Review, Experimentation, Media and Communications, Correlation Analysis, Journalism, Statistical Analysis, Probability & Statistics, Descriptive Statistics, Communication
★ 4.4 (290) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Responsible AI, Generative AI, Google Gemini, Project Management, AI Enablement, Project Management Life Cycle, Data Ethics, Case Studies, Project Documentation, Automation
★ 4.5 (170) · Intermediate · Course · 1 - 4 Weeks