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.

Coursera
Skills you'll gain: Postman API Platform, API Testing, Data Validation, Application Programming Interface (API), Restful API, Verification And Validation, Performance Tuning, Microservices, Performance Testing, Security Controls, Data Integrity, Authentications
Intermediate · Course · 1 - 4 Weeks

AI CERTs
Skills you'll gain: Responsible AI, Tensorflow, PyTorch (Machine Learning Library), Anomaly Detection, AI Personalization, Internet Of Things, Telecommunications, Artificial Intelligence and Machine Learning (AI/ML), Artificial Intelligence, Wireless Networks, Generative AI, Emerging Technologies, Generative AI Agents, Network Performance Management, Digital Communications, Network Architecture, Network Protocols, Computer Networking, Communication, System Design and Implementation
Advanced · Specialization · 1 - 3 Months

Skills you'll gain: Positivity, Resilience, Mindfulness, Growth Mindedness, Empowerment, Persistence, Personal Development, Goal Setting, Self-Motivation, Courage, Self-Awareness, Visionary, Creative Thinking, Action Oriented, Journals
Beginner · Course · 1 - 4 Weeks

Board Infinity
Skills you'll gain: Responsive Web Design, Cloud Deployment, Web Design, Database Systems, Front-End Web Development, Application Programming Interface (API), Full-Stack Web Development, Amazon Web Services, Cloud Computing, Authentications, Development Environment, Web Applications, Frontend Performance, Continuous Deployment, Continuous Integration, JavaScript Frameworks, Web Development, Web Servers, Usability, Mobile Development
Advanced · Specialization · 1 - 3 Months

Skills you'll gain: Endpoint Detection and Response, Cloud Security, Network Administration, Infrastructure Security, Encryption, Cloud Computing, Authorization (Computing), Network Architecture, Dynamic Host Configuration Protocol (DHCP), Identity and Access Management, Email Security, Application Security, Human Factors (Security), Network Infrastructure, Network Protocols, Local Area Networks, Data Security, Authentications, Malware Protection, Mobile Security
Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Case Studies, Collaboration, Professional Networking, Leadership and Management, Professionalism, Teamwork, Team Leadership, Professional Development, Leadership, Business Leadership, Relationship Building, Branding, Personal Attributes, Goal Setting, Mentorship, Adaptability
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: PHP (Scripting Language), File I/O, Web Applications, Usability, Responsive Web Design, Information Architecture, Hypertext Markup Language (HTML), Front-End Web Development, MySQL, Web Design and Development, User Experience Design, Browser Compatibility, User Interface (UI), HTML and CSS, Verification And Validation, User Interface (UI) Design, Server Side, Semantic Web, Back-End Web Development, Javascript
Beginner · Specialization · 1 - 3 Months

LearnKartS
Skills you'll gain: Cyber Security Strategy, Security Controls, Security Awareness, Cryptography, Resilience, Service Recovery
Beginner · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: Fundraising, Goal Setting, Campaign Management, Promotions and Campaigns, Project Design, Drive Engagement, Content Creation
Beginner · Guided Project · Less Than 2 Hours

Coursera
Skills you'll gain: Prototyping, Adobe Firefly, AI Workflows, Functional Design, Generative AI, Prompt Engineering, Artificial Intelligence, Mockups, ChatGPT, Canva (Software), User Experience Design, Wireframing, Creativity, Automation
Beginner · Course · 1 - 4 Weeks

Logical Operations
Skills you'll gain: Data Structures, Data Processing, Virtual Machines, Verification And Validation, Program Development, Data Preprocessing, Python Programming, Debugging, Maintainability, Programming Principles, Application Development, Scripting, Scripting Languages, Computer Programming, Software Installation, Development Environment, Software Development, Computer Programming Tools, Functional Design, Cross Platform Development
Beginner · Specialization · 1 - 3 Months

University of California, Davis
Skills you'll gain: Responsive Web Design, HTML and CSS, Web Design, Cascading Style Sheets (CSS), GitHub, Front-End Web Development, Web Applications, Web Development, Mobile Development, User Interface (UI) Design
Intermediate · Course · 1 - 4 Weeks