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.

Yonsei University
Skills you'll gain: Language Learning, Grammar, Writing, Vocabulary, Literacy, Oral Comprehension, Culture
★ 4.9 (53K) · Beginner · Course · 1 - 3 Months
Skills you'll gain: Good Clinical Practices (GCP), Institutional Review Board (IRB), Clinical Research Ethics, Clinical Research Coordination, Clinical Trials, Clinical Research, Clinical Data Management, Drug Development, Document Management
★ 4.8 (160) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Cybersecurity, Security Controls, Cyber Attacks, Security Management, Network Security, Cyber Risk, Security Information and Event Management (SIEM), Information Assurance, Data Ethics, Network Analysis
★ 4.8 (41K) · Beginner · Course · 1 - 4 Weeks

Multiple educators
Skills you'll gain: Incident Response, Email Security, Digital Forensics, Network Security, Computer Security Incident Management, Cloud Computing Architecture, Incident Management, Business Continuity Planning, Penetration Testing, Cloud Services, Business Continuity, Security Controls, System Configuration, Generative AI, Data Storage, Peripheral Devices, Cybersecurity, Application Security, Information Technology, Cryptography
★ 4.7 (15K) · Beginner · Professional Certificate · 3 - 6 Months

Skills you'll gain: Operating System Administration, Digital Forensics, Cyber Threat Hunting, Email Security, Incident Response, IT Service Management, Cloud Computing, Governance Risk Management and Compliance, Information Technology Infrastructure Library, Malware Protection, Networking Hardware, Service Management, Identity and Access Management, Penetration Testing, Database Management, IT Security Architecture, Cyber Threat Intelligence, Interviewing Skills, Cybersecurity, Cyber Security Assessment
★ 4.6 (27K) · Beginner · Professional Certificate · 3 - 6 Months

Skills you'll gain: HTML and CSS, Bootstrap (Front-End Framework), Responsive Web Design, Front-End Web Development, User Interface (UI), Hypertext Markup Language (HTML), Web Frameworks, Web Development, Web Development Tools, Cascading Style Sheets (CSS), Web Design, React.js, General Networking, Javascript, Web Servers
★ 4.8 (14K) · Beginner · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: HTML and CSS, Cascading Style Sheets (CSS), Ajax, Javascript, Responsive Web Design, Front-End Web Development, Bootstrap (Front-End Framework), Web Design, Hypertext Markup Language (HTML), Web Development, Development Environment, Web Development Tools, Web Design and Development, JSON, Web Applications, Web Content Accessibility Guidelines, Browser Compatibility, Object Oriented Programming (OOP), Event-Driven Programming, User Interface and User Experience (UI/UX) Design
★ 4.7 (17K) · Beginner · Specialization · 1 - 3 Months

University of Colorado System
Skills you'll gain: Trauma Care, Emergency Medical Services, Medical Emergency, Patient Evaluation, Triage, Emergency Response, Clinical Assessment, First Aid, Wound Care, Human Musculoskeletal System, Physiology, Anatomy
★ 4.8 (485) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: React Native, iOS Development, Apple iOS, Software Development Life Cycle, Flutter (Software), Mobile Development, Software Architecture, Android Studio, User Centered Design, Android Development, Swift Programming, Responsive Web Design, Git (Version Control System), GitHub, User Interface (UI) Design, Android (Operating System), Front-End Web Development, Cascading Style Sheets (CSS), Data Ethics, AI Personalization
★ 4.6 (8.4K) · Beginner · Professional Certificate · 3 - 6 Months

University of Colorado System
Skills you'll gain: Patient Evaluation, Pharmacology, Airway Management, Cardiology, Medication Administration, Medical Emergency, Emergency Medical Services, Emergency Medicine, Respiratory Care, Neurology, Clinical Assessment, Health Assessment, Mental Status Examination, Respiration, Patient Treatment, Anatomy, Physiology
★ 4.8 (815) · Beginner · Course · 1 - 3 Months

Imperial College London
Skills you'll gain: Dimensionality Reduction, Linear Algebra, Regression Analysis, NumPy, Calculus, Unsupervised Learning, Applied Mathematics, Statistical Methods, Descriptive Statistics, Model Optimization, Mathematical Software, Jupyter, Statistics, Numerical Analysis, Applied Machine Learning, Geometry, Artificial Neural Networks, Data Science, Data Manipulation, Data Transformation
★ 4.6 (15K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Data Storytelling, Performance Measurement, Digital Media Strategy, Performance Metric, Search Engine Marketing, Conversion Funnel Analysis, Data-Driven Decision-Making, Search Engine Optimization, Branding, Web Analytics and SEO, Digital Marketing, Customer Engagement, Marketing Planning, Marketing Strategies, Marketing, E-Commerce, Email Marketing, Brand Awareness, Marketing Analytics, Performance marketing
★ 4.8 (31K) · Beginner · Course · 1 - 4 Weeks