First aid courses can help you learn how to recognize common emergencies, understand basic response principles, and communicate effectively with trained professionals. You can build skills in identifying signs of illness or injury, assessing situations safely, and applying general preparedness concepts. Many courses introduce frameworks, scenario-based learning, and tools that support building confidence in responding to unexpected events.

Johns Hopkins University
Skills you'll gain: Rmarkdown, Version Control, Data Science, R (Software), Git (Version Control System), GitHub, Software Versioning, Data Literacy, General Science and Research, Data Analysis, R Programming, Development Environment, Statistical Reporting, Software Installation
★ 4.6 (34K) · Mixed · Course · 1 - 4 Weeks

University of Washington
Skills you'll gain: Model Evaluation, Applied Machine Learning, Machine Learning Methods, Feature Engineering, Regression Analysis, Machine Learning, Image Analysis, Machine Learning Algorithms, AI Personalization, Artificial Intelligence and Machine Learning (AI/ML), Supervised Learning, Model Training, Artificial Intelligence, Deep Learning, Computer Vision, Transfer Learning, Application Development, Predictive Modeling, Model Deployment, Python Programming
★ 4.6 (14K) · Mixed · Course · 1 - 3 Months

Pontificia Universidad CatĂ³lica de Chile
Skills you'll gain: Primary Care, Chronic Diseases, Care Management, Nursing Care, Health Systems, Public Health, Preventative Care, Epidemiology, Care Coordination, Patient-centered Care, Patient Education and Support, Health Policy, Family Support
★ 4.8 (1.2K) · Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: HTML and CSS, Web Design and Development, Front-End Web Development, Responsive Web Design, Web Applications, Web Design, Ajax, Hypertext Markup Language (HTML), Cascading Style Sheets (CSS), Web Development, Web Development Tools, Development Environment, Javascript, Frontend Performance, Web Content Accessibility Guidelines, Server Side, Semantic Web, Software Installation
★ 4.7 (17K) · Mixed · Course · 1 - 4 Weeks

Skills you'll gain: Python Programming, Command-Line Interface, Programming Principles, Computer Programming, Scripting, Computer Programming Tools, Program Development, Development Environment
★ 4.6 (3.1K) · Beginner · Guided Project · Less Than 2 Hours

Rice University
Skills you'll gain: Anatomy, Biochemistry, Physiology, Cell Biology, Biology, Chemistry, Medical Terminology, Molecular, Cellular, and Microbiology
★ 4.7 (126) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Email Automation, Content Management Systems, WordPress, Web Presence, AI Personalization, Event Management, Search Engine Optimization, Web Analytics and SEO, AI powered creativity, Content Optimization, Web Content, Blogs, Web Design, Digital Publishing, Web Development, Web Analytics, No-Code Development, Content Creation, Content Management, Brand Management
★ 4.4 (7.6K) · Beginner · Specialization · 1 - 3 Months

University of Michigan
Skills you'll gain: Occupational Health, Environment Health And Safety, Occupational Hygiene, Public Health, Environmental Laws, Environmental Regulations, Environmental Policy, Systems Thinking, Occupational Safety and Health Administration (OSHA), Environmental Science, Public Health and Disease Prevention, Injury Prevention, Environmental Issue, Health Policy, Risk Analysis
★ 4.6 (135) · Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Risk Modeling, Operations Research, Regression Analysis, Microsoft Excel, Business Analytics, Risk Analysis, Business Modeling, Data Modeling, Financial Modeling, Business Analysis, Risk Management, Resource Allocation, Statistical Analysis, Decision Intelligence, Mathematical Modeling, Process Optimization, Statistical Methods, Spreadsheet Software, Predictive Analytics, Transportation Operations
★ 4.8 (4.1K) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Generative AI, Generative Model Architectures, Prompt Engineering Tools, AI literacy, Multimodal Prompts, ChatGPT, AI powered creativity, Artificial Intelligence and Machine Learning (AI/ML), Machine Learning
★ 4.6 (4.6K) · Beginner · Course · 1 - 4 Weeks

California Institute of the Arts
Skills you'll gain: Information Architecture, Wireframing, User Interface and User Experience (UI/UX) Design, Persona (User Experience), User Experience, Mockups, User Experience Design, UI/UX Strategy, Responsive Web Design, Web Design, User Interface (UI), User Interface (UI) Design, Adobe XD, User Centered Design, Interaction Design, Prototyping, Web Design and Development, Layout Design, Usability, User Research
★ 4.7 (8.1K) · Beginner · Specialization · 3 - 6 Months

The University of Edinburgh
Skills you'll gain: Video Game Development, Game Design, Program Development, Software Engineering, Programming Principles, Animation and Game Design, Software Development, Event-Driven Programming, Computer Programming, Computer Programming Tools, Code Reusability, No-Code Development, Computational Thinking, Algorithms, Animations
★ 4.7 (4K) · Beginner · Course · 1 - 3 Months