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: Go (Programming Language), Debugging, Unit Testing, Verification And Validation, Application Frameworks, Programming Principles, Web Development, Web Applications, Data Structures, Development Environment, Object Oriented Programming (OOP), Software Design, Command-Line Interface
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Terraform, Infrastructure as Code (IaC), Network Infrastructure, Amazon Web Services, Cloud Infrastructure, Network Architecture, Network Planning And Design, Cloud Computing, Cloud Computing Architecture, Multi-Cloud, Amazon Elastic Compute Cloud, Microsoft Azure, Wide Area Networks, General Networking, Google Cloud Platform, Cloud Deployment, DevOps, Cloud Security, Automation, AWS Identity and Access Management (IAM)
Intermediate · Specialization · 1 - 4 Weeks

EDUCBA
Skills you'll gain: Model View Controller, Java Platform Enterprise Edition (J2EE), Back-End Web Development, Server Side, Data Access, Apache Tomcat, Application Servers, Relational Databases, Databases, Java, Web Servers, SQL, Authentications, Web Applications, Secure Coding, Software Design Patterns, Data Persistence, Context Management
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Canva (Software), Animations, Content Creation, Graphic and Visual Design, Graphic Design
Beginner · Guided Project · Less Than 2 Hours

Indian Institute of Science
Skills you'll gain: Biomedical Engineering, Medical Devices, Medical Equipment and Technology, Vital Signs, Chemistry, ISO 13485 Standard, Materials science, Diagnostic Tests, Electrophysiology, Biology, Neurology, Electronics, Artificial Intelligence, Oncology
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Data Architecture, Microsoft Azure, Data Lakes, Enterprise Architecture, Data Warehousing, Data Integration, Virtualization, Cloud Storage, Data Transformation, Data Governance, Real Time Data, Scalability
Intermediate · Course · 1 - 3 Months

Lund University
Skills you'll gain: Climate Change Mitigation, Climate Change Adaptation, Environment, Sustainable Development, Energy and Utilities, Sustainable Design, Scientific Methods, Sustainable Technologies, Transportation Operations, Environmental Policy, Governance
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Git (Version Control System), Version Control, DevOps, Software Development Life Cycle, Systems Development Life Cycle, Linux Administration, Software Development, Software Development Methodologies, File Management
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cucumber (Software), Selenium (Software), Apache Maven, Java, Object Oriented Programming (OOP), Issue Tracking, Gherkin (Scripting Language), Test Automation, Behavior-Driven Development, Test Execution Engine, Test Case, Debugging, Integration Testing, Data Structures
Intermediate · Course · 1 - 3 Months

Illinois Tech
Skills you'll gain: Design Thinking, Global Marketing, Entrepreneurship, Business Modeling, Innovation, Team Building, Storytelling, Market Research, Team Management, Oral Expression, Entrepreneurial Finance, New Product Development, Business Strategies, Project Design, Team Leadership, Fundraising and Crowdsourcing, Financial Planning, Customer Engagement, Business Ethics, Competitive Analysis
Build toward a degree
Intermediate · Course · 1 - 3 Months

Goodwill Industries International
Skills you'll gain: digital literacy, Training Programs, Relationship Building, Course Development, Community Development, Community Outreach, Research, Workplace inclusivity, Curriculum Planning, Needs Assessment, Planning, Collaboration, Resourcefulness, Data Mapping
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Human Capital, Human Resources, Talent Management, Workforce Planning, Talent Acquisition, Human Resource Strategy, Employee Performance Management, Performance Appraisal, Talent Recruitment, Labor Relations, Compensation and Benefits, Succession Planning, Workforce Management, Employee Training, Diversity and Inclusion, Occupational Safety And Health, Employee Engagement
Mixed · Course · 1 - 4 Weeks