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: Django (Web Framework), Restful API, Object-Relational Mapping, Bootstrap (Front-End Framework), Application Deployment, Model View Controller, Database Management, Web Development, User Accounts, Responsive Web Design, Cloud Deployment, Authentications, Back-End Web Development, Development Environment, Authorization (Computing), Python Programming, Data Migration
Intermediate · Course · 3 - 6 Months

Coursera
Skills you'll gain: Financial Modeling, Variance Analysis, Key Performance Indicators (KPIs), Bookkeeping, Financial Forecasting, Revenue Forecasting, Budget Management, Financial Statement Analysis, Business Reporting, Performance Reporting, Financial Auditing, Capital Budgeting, Financial Controls, Financial Reporting, Operating Budget, Financial Analysis, Report Writing, Process Improvement, Banking Services, Financial Data
★ 4.2 (6) · Intermediate · Specialization · 3 - 6 Months

John Wiley & Sons
Skills you'll gain: Organizational Change, Business Transformation, Mergers & Acquisitions, Change Management, Organizational Development, Digital Transformation, Culture Transformation, Agile Methodology, Scaled Agile Framework, Adaptability, Organizational Leadership, Organizational Strategy, Business Leadership, Organizational Effectiveness, Strategic Planning, Technology Strategies, Organizational Structure, Innovation, Leadership, Business Strategy
Intermediate · Course · 1 - 3 Months

Scrimba
Skills you'll gain: React.js, Authentications, Frontend Performance, Authorization (Computing), Web Applications, Web Development, User Experience Design
★ 4.8 (17) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Knowledge of Apple Software, Knowledge of Apple Hardware, Network Planning And Design, Wireless Networks, Azure Active Directory, Application Lifecycle Management, Cloud-Based Integration, Configuration Management, Encryption
Intermediate · Course · 3 - 6 Months

Skills you'll gain: Patch Management, Data Security, Cloud Security, Amazon Web Services, Data Governance, Cyber Governance, Cloud Management, Key Management, Encryption, IT Automation, Public Key Infrastructure, Configuration Management
★ 4.8 (8) · Intermediate · Course · 1 - 4 Weeks

Universidad Peruana de Ciencias Aplicadas
Skills you'll gain: Design Thinking, Business Modeling, Social Impact, Needs Assessment, Human Centered Design, Ideation, Sustainable Business, Innovation, Professional Networking, Growth Mindedness, Entrepreneurship, Lifelong Learning, Self-Motivation, Community Development, Self-Awareness, Sustainable Development, Social Justice, Professional Development, Plan Execution, Relationship Building
★ 4.7 (24) · Beginner · Course · 1 - 3 Months

Skills you'll gain: SAS (Software), Forecasting, Time Series Analysis and Forecasting, Statistical Methods, Predictive Modeling, Statistical Modeling, Feature Engineering, Automation, Anomaly Detection, Data Processing, Data Transformation, Model Evaluation
Intermediate · Course · 1 - 3 Months
University of Virginia
Skills you'll gain: Ideation, Resource Management, Resourcefulness, Entrepreneurship, Dealing With Ambiguity, Creative Problem-Solving, Open Mindset, Overcoming Obstacles, Growth Mindedness, Resource Utilization, Stakeholder Management, Innovation, Problem Solving, Stakeholder Engagement, Tenacity, Proactivity, Adaptability, Action Oriented, New Business Development, Persuasive Communication
★ 4.9 (8) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Responsive Web Design, HTML and CSS, Cascading Style Sheets (CSS), Web Design, Web Design and Development, Front-End Web Development
★ 4.8 (13) · Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Ajax, JSON, Javascript, Application Programming Interface (API), Web Applications, Secure Coding, Application Security
★ 4.8 (8) · Intermediate · Course · 1 - 4 Weeks

SkillsBooster Academy
Skills you'll gain: Social Media Campaigns, Campaign Management, Social Media Marketing, AI powered creativity, Social Media Content, Content Creation, Social Media Strategy, Social Media Management, Advertising Campaigns, Prompt Engineering, Data-Driven Marketing, Generative AI, Social Media Analytics, Digital Marketing Campaigns, Campaign Planning, Responsible AI, Artificial Intelligence, Google Gemini, ChatGPT, Microsoft Copilot
★ 5 (6) · Beginner · Course · 1 - 3 Months