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: Cascading Style Sheets (CSS), Debugging, Search Engine Optimization, PHP (Scripting Language), jQuery, Hypertext Markup Language (HTML), MySQL, WordPress, Web Applications, Application Programming Interface (API), Web Development, Content Management Systems, Restful API, Javascript, Application Deployment, Cloud Hosting, Program Development, Object Oriented Programming (OOP), Servers, Development Environment
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Public Key Infrastructure, Cloud Security, Hardening, Security Engineering, Infrastructure Security, Application Security, Information Systems Security, Network Security, Cyber Security Assessment, System Configuration, Cryptography, Encryption, Mobile Security
Intermediate · 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

EDUCBA
Skills you'll gain: MySQL, Database Design, Python Programming, User Interface (UI) Design, UI Components, Database Application, Database Management, Software Design, Application Development, Data Access
Intermediate · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: API Design, Application Programming Interface (API), Postman API Platform, API Testing, Software Documentation, Software Design Documents, OAuth, CI/CD, .NET Framework, Web Services, Authentications
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Data Cleansing, Database Design, Data Integration, SQL, Data Manipulation, Database Management, Relational Databases, Data Validation, Data Quality, Data Integrity, Performance Tuning
Beginner · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Google Cloud Platform, Cloud Infrastructure, Kubernetes, Cloud Deployment, Infrastructure As A Service (IaaS), Model Deployment, Network Performance Management, Application Deployment, Cloud Engineering, AI Orchestration, Containerization, Performance Tuning, Network Planning And Design, Distributed Computing, System Configuration
Intermediate · Course · 1 - 3 Months
Coursera
Skills you'll gain: Vibrations, Value Engineering, Failure Analysis, Engineering Analysis, Mechanical Design, Engineering Design Process, Mechanical Engineering, Engineering Calculations, Industrial Design, Materials science, Material Handling, Industrial Engineering, Design, Analysis, Innovation, Application Development
Intermediate · Course · 1 - 4 Weeks

Google Cloud
Skills you'll gain: Data Infrastructure, Model Deployment, Data Processing, Data Pipelines
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Integration Testing, Command-Line Interface, Application Deployment, Dependency Analysis, Data Migration
Intermediate · Course · 1 - 4 Weeks

Microsoft
Skills you'll gain: Data Pipelines, Databases, Extract, Transform, Load, Data Lakes, NoSQL, SQL Server Integration Services (SSIS), Data Processing, Data Architecture, Azure Synapse Analytics, Data Warehousing, Data Management, Data Transformation, Microsoft Azure, Database Management Systems, Data Infrastructure, Data Integration, Data Governance, Data Storage Technologies, Data Storage, Real Time Data
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Variance Analysis, Financial Analysis, Financial Data, Financial Acumen, Analysis, Auditing, Financial Statements, Reconciliation, Business Communication, Business Analysis, Accounting, Financial Auditing, Accounting Records, Budgeting, Verification And Validation, Investigation, Business Strategy
Mixed · Course · 1 - 4 Weeks