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: AI Security, Threat Modeling, Open Web Application Security Project (OWASP), Security Testing, Retrieval-Augmented Generation, Software Architecture, API Design, Test Automation, Vulnerability Management, Agentic systems, Systems Design, Model Evaluation, Test Driven Development (TDD), CI/CD, Python Programming, Continuous Deployment, Dependency Analysis, Large Language Modeling, Machine Learning, Performance Analysis
Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Canva (Software), Photo Editing, Creative Design, Graphic and Visual Design, Design Elements And Principles
★ 4.5 (15) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Canva (Software), Marketing Design, Social Media Marketing, Social Media Content, Content Creation, Graphic and Visual Design Software, Social Media, Marketing Materials, Color Matching, Graphic Design, Graphical Tools, Design, User Accounts
★ 4.5 (69) · Beginner · Guided Project · Less Than 2 Hours

Google Cloud
Skills you'll gain: Model Deployment, Google Cloud Platform, Cloud Deployment, Cloud Infrastructure, Model Optimization, Cloud Computing Architecture, Performance Tuning, Computer Architecture, AI Workflows, Model Training, Artificial Intelligence, Hardware Architecture, Systems Architecture
★ 4.2 (18) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Microsoft Azure, Virtual Machines, Virtualization and Virtual Machines, Cloud Development, Cloud Hosting, Infrastructure As A Service (IaaS), Cloud Deployment, Application Deployment, Linux, Cloud Management, Linux Servers, Full-Stack Web Development, Web Applications, Node.JS, MongoDB
★ 4.6 (32) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Cryptographic Protocols, Network Security, Encryption, OSI Models, IT Security Architecture, Network Performance Management, Network Architecture, General Networking, Network Planning And Design, Communication Systems, Remote Access Systems, TCP/IP, Network Infrastructure, Network Protocols, Wireless Networks, Virtual Private Networks (VPN), Virtual Networking, Endpoint Security, Cloud Security, Software-Defined Networking
★ 4.8 (14) · Intermediate · Course · 1 - 4 Weeks

Korea Advanced Institute of Science and Technology(KAIST)
Skills you'll gain: Matplotlib, Data Visualization, Tensorflow, NumPy, Pandas (Python Package), Object Oriented Programming (OOP), Seaborn, Python Programming, Artificial Intelligence and Machine Learning (AI/ML), Keras (Neural Network Library), Scikit Learn (Machine Learning Library), Data Manipulation
★ 4.6 (26) · Beginner · Course · 1 - 3 Months

Skills you'll gain: Gemini, Google Gemini, Multimodal Prompts, Retrieval-Augmented Generation, Data Store, Embeddings, Metadata Management, Image Analysis, Large Language Modeling, Prompt Engineering, Cloud Computing, Artificial Intelligence
★ 3.9 (10) · Intermediate · Project · Less Than 2 Hours

AI CERTs
Skills you'll gain: AI Personalization, Personalized Service, Operations Support Systems, Customer Analysis, Telecommunications, Customer Retention, Network Performance Management, Responsible AI, Wireless Networks, Artificial Intelligence and Machine Learning (AI/ML), Artificial Intelligence, Network Architecture, Computer Networking, Emerging Technologies, Digital Communications, Generative AI Agents, Generative AI, Network Protocols, System Design and Implementation, Communication
★ 4.5 (21) · Advanced · Specialization · 1 - 3 Months

Skills you'll gain: Canva (Software), Social Media Campaigns, Email Marketing, Advertising Campaigns, Online Advertising, Content Creation, Graphical Tools, Marketing Design, Graphic and Visual Design, Product Promotion, Advertising, Marketing Materials, Graphic Design, Promotional Materials, Marketing Communications, Sales Development, Digital Marketing
Beginner · Guided Project · Less Than 2 Hours

Universidad Nacional Autónoma de México
Skills you'll gain: Digital Signal Processing, Musical Composition, Electronic Hardware, Music, Electronic Components, Electronics, Music Theory, Digital Communications, Hardware Design, Patch Management, Embedded Systems, System Configuration, Algorithms, Performance Tuning, Music Performance, Dataflow, Data Sharing, Creative Design, Programming Principles, Other Programming Languages
★ 4.7 (59) · Beginner · Specialization · 1 - 3 Months

Skills you'll gain: Predictive Modeling, Data Preprocessing, Data Visualization, Plot (Graphics), Predictive Analytics, Statistical Visualization, Model Training, Model Evaluation, Machine Learning Software, Machine Learning Methods, Object Oriented Design, Data Wrangling, Game Design, Data Science, Data Import/Export, Development Environment
Intermediate · Course · 3 - 6 Months