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.

Northeastern University
Skills you'll gain: Data Governance, Extract, Transform, Load, Data Warehousing, Data Integration, DevOps, Data Pipelines, CI/CD, Data Architecture, Infrastructure as Code (IaC), Data Quality, Amazon Redshift, Cloud Computing, Database Architecture and Administration, Cloud Computing Architecture, Analytics, Data Transformation, Amazon S3, Scalability
Mixed · Course · 1 - 3 Months

LearnQuest
Skills you'll gain: Cyber Threat Hunting, Incident Response, Cyber Threat Intelligence, Security Information and Event Management (SIEM), Intrusion Detection and Prevention, Threat Detection, Anomaly Detection, AI Security, Scripting, Cyber Operations, Event Monitoring, Network Analysis, Automation, Data Preprocessing, Machine Learning Algorithms
Beginner · Course · 1 - 4 Weeks

The Open University
Skills you'll gain: Ideation, Creative Thinking, Critical Thinking, Cognitive flexibility, Innovation, Systems Thinking, Problem Solving, Sustainable Business, Decision Making, Business Architecture
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: Organizational Skills, Project Management Software, Project Coordination, Workflow Management, Project Management, User Accounts
Beginner · Guided Project · Less Than 2 Hours

Johns Hopkins University
Skills you'll gain: Trigonometry, Probability, Data Analysis, Algebra, Probability Distribution, Descriptive Statistics, Mathematical Modeling, Graphing, Statistics, Geometry, Arithmetic
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Color Theory, Javascript, Front-End Web Development, User Interface (UI) Design, Web Development, Data Validation
Intermediate · Course · 1 - 4 Weeks

University of Pittsburgh
Skills you'll gain: Data Storytelling, Data Presentation, Plot (Graphics), Data Visualization, Matplotlib, Interactive Data Visualization, Data Visualization Software, Seaborn, Data Analysis, Graphic and Visual Design, Python Programming, Jupyter, Pandas (Python Package), Data Manipulation, NumPy
Build toward a degree
Intermediate · Course · 1 - 3 Months

Cisco Learning and Certifications
Skills you'll gain: Network Planning And Design, Network Engineering, Computer Networking, Network Administration, Border Gateway Protocol, Network Troubleshooting, Network Performance Management, Scalability
Beginner · Course · 1 - 3 Months
Skills you'll gain: Dayforce (HCM Software), Human Resources Software, Human Resource Strategy, Human Resources Information System (HRIS), Role-Based Access Control (RBAC), Human Resources, Compliance Management, Compliance Reporting, Payroll, Data Architecture, Data Flow Diagrams (DFDs), Human Capital, Workforce Planning, Oracle Cloud Applications, Workforce Management, Benefits Administration, Enterprise Resource Planning, Business Strategy, Analytics
Intermediate · Course · 1 - 4 Weeks

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

Skills you'll gain: Lean Six Sigma, Process Mapping, Quality Improvement, Root Cause Analysis, Process Improvement, Strategic Leadership, Business Leadership, Organizational Change, Change Management, Descriptive Statistics, Continuous Improvement Process, Performance Measurement, Business Priorities, Statistical Analysis, Process Design
Mixed · Course · 1 - 3 Months