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.

Simplilearn
Skills you'll gain: Product Promotion, Search Engine Optimization, Paid media, E-Commerce, Logistics Management, Promotions and Campaigns, Logistics, Product Marketing, Promotional Strategies, Product Knowledge, Online Advertising, Digital Advertising, Content Optimization, Social Media Marketing
★ 3.9 (8) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Frontend Integration, Full-Stack Web Development, Email Automation, Front-End Web Development, HTML and CSS, User Interface (UI), Web Design, Code Reusability, Server Side, Java Programming, Email Marketing, MySQL, Program Development, Hypertext Markup Language (HTML), Software Architecture, Web Applications, Back-End Web Development, Development Testing, Cascading Style Sheets (CSS), Case Studies
★ 4.4 (22) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Proposal Development, Account Strategy, Business Writing, Account Management, Customer Relationship Management (CRM) Software, Customer experience strategy (CX), Customer experience improvement, Sales Presentation, Customer Insights, Stakeholder Communications, Customer Acquisition Management, Stakeholder Engagement, Loyalty Programs, Customer Analysis, Microsoft Power Platform, Personalized Service, Gap Analysis, Requirements Analysis
Advanced · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: MITRE ATT&CK Framework, Metasploit, Penetration Testing, Exploit development, Exploitation techniques, Cyber Operations, Cybersecurity, Operating Systems, Hardening, Computer Security, Malware Protection, Vulnerability Assessments, Security Controls, Authorization (Computing), System Programming, Memory Management, Data Persistence, Computer Architecture
★ 4.1 (9) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: React.js, User Interface and User Experience (UI/UX) Design, Cascading Style Sheets (CSS), UI Components, Event-Driven Programming, User Experience Design, User Interface (UI), Application Programming Interface (API), Front-End Web Development, Data Management, JavaScript Frameworks, Javascript, Web Development
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), HTML and CSS, Web Applications, Web Design and Development, Javascript, Frontend Integration, Web Design, Web Development, Front-End Web Development, Game Design, Program Development
★ 4.2 (12) · Intermediate · Guided Project · Less Than 2 Hours

Infosec
Skills you'll gain: Distributed Denial-Of-Service (DDoS) Attacks, Secure Coding, Application Security, Encryption, Security Controls, Data Security, Endpoint Security, Cryptography, Object-Relational Mapping, Authentications, Data Access, Computer Programming
★ 4.4 (9) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Bookkeeping, Financial Analysis, Financial Modeling, Financial Statements, Financial Statement Analysis, Financial Accounting, Financial Reporting, Microsoft Excel, Reconciliation, Income Statement, Accounting, Excel Formulas, Balance Sheet, Cash Flows, Spreadsheet Software, Auditing, Verification And Validation
Advanced · Course · 1 - 4 Weeks

Logical Operations
Skills you'll gain: Power BI, Dashboard Creation, Dashboard, Collaborative Software, Collaboration, Data Sharing, Microsoft Power Platform, Microsoft Excel, Business Intelligence, Microsoft 365, Interactive Data Visualization, Microsoft PowerPoint, Data Analysis Software, Performance Tuning, Data Analysis
★ 4.5 (11) · Mixed · Course · 1 - 4 Weeks
Erasmus University Rotterdam
Skills you'll gain: Data Sharing, Educational Materials, Open Source Technology, General Science and Research, Science and Research, Research, Research Design, Research Methodologies, Peer Review, Data Access, Community Outreach, Ethical Standards And Conduct, Data Store, Interoperability, Metadata Management, Intellectual Property
★ 4.7 (19) · Mixed · Course · 1 - 3 Months

University of London
Skills you'll gain: Applied Mathematics, Trigonometry, Mathematics and Mathematical Modeling, Graphing, Calculus, Computer Science, Mathematical Theory & Analysis, Geometry, Plot (Graphics), Mechanics, Computer Graphics, Graph Theory, Mathematical Modeling, Functional Requirement, Graphic Design, Derivatives
Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Data Analysis Expressions (DAX), Dashboard, Dashboard Creation, Power BI, Microsoft Power Platform, Data Visualization, Data Transformation, Data Modeling, Data Presentation, Data Import/Export, Data Wrangling, Data Visualization Software, Interactive Data Visualization, Data Analysis, Analytics, Data Cleansing, Role-Based Access Control (RBAC), Data Management
★ 4.3 (16) · Intermediate · Course · 1 - 4 Weeks