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: OSI Models, TCP/IP, Network Protocols, Linux, Dynamic Host Configuration Protocol (DHCP), Virtual Networking, Network Analysis, Linux Administration, Virtual Machines, General Networking, Linux Commands, System Configuration, Network Architecture, Computer Networking, Command-Line Interface, Software Installation
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Canva (Software), Collaborative Software, Teaching, Education Software and Technology, Interactive Learning, Graphic Design, User Accounts
Beginner · Guided Project · Less Than 2 Hours

LearnKartS
Skills you'll gain: Web Analytics and SEO, Content Management Systems, Web Design, Web Analytics, Supplier Management, Web Design and Development, E-Commerce, WordPress, Search Engine Optimization, No-Code Development, Blogs, Retail Management, Order Management, Web Development, Marketing Strategies, Shipping and Receiving, Information Architecture, Customer Relationship Management (CRM) Software, Web Frameworks, Web Development Tools
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Adobe Illustrator, Graphic and Visual Design, Color Theory, Adobe Creative Cloud, Creative Design, Visualization (Computer Graphics), Design Elements And Principles, Graphic Design, Design, Visual Design
Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Data Science, Data Literacy, Project Design, Data Analysis, Data Management, Data Presentation, Data-Driven Decision-Making, Business Analytics, Performance Metric, Machine Learning, Statistical Inference
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: API Testing, React.js, Containerization, Cloud Deployment, API Gateway, Software Documentation, Amazon Web Services, Cloud Applications, Front-End Web Development, Software Testing, Middleware, Test Automation, Technical Documentation
Advanced · Course · 1 - 3 Months

Logical Operations
Skills you'll gain: Microsoft Access, Database Design, Relational Databases, Database Management, Excel Macros, Microsoft 365, Database Development, Database Administration, Database Architecture and Administration, Data Integrity, Data Maintenance, Microsoft Windows, Databases, Microsoft Office, Data Entry, Query Languages, Data Presentation, Productivity Software, User Interface (UI), Scripting
Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Programmable Logic Controllers, Real-Time Operating Systems, Program Development, Human Machine Interfaces, Automation, System Monitoring, Simulations
Advanced · Course · 1 - 4 Weeks

Skills you'll gain: JSON, API Testing, Restful API, Software Quality Assurance, Software Engineering, Test Script Development, Java, Data Mapping, Software Testing, Test Case, Test Data
Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Apache Cassandra, Google Cloud Platform, Database Administration, Operational Databases, Query Languages, Database Design, Database Management, Cloud Deployment
Beginner · Project · Less Than 2 Hours

Skills you'll gain: International Financial Reporting Standards, Business Valuation, Consolidation, Technical Accounting, Financial Reporting, Financial Analysis, Financial Accounting, Mergers & Acquisitions, Financial Statement Analysis, Income Statement, Accounting, Balance Sheet
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Microsoft Office, Public Speaking
Beginner · Guided Project · Less Than 2 Hours