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.

Lund University
Skills you'll gain: Radiation Therapy, Medical Equipment, Materials science, Semiconductors, electromagnetics, Physics, Emerging Technologies, Laboratory Research, General Science and Research
★ 4.7 (203) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Node.JS, Restful API, Database Design, Database Development, Database Application, NoSQL, MongoDB, Back-End Web Development, Performance Tuning, API Design, Cloud Applications, Relational Databases, Authentications, Server Side, Application Programming Interface (API), Cloud Development, Cloud Deployment, Middleware, Scalability, Javascript
★ 4.5 (55) · Intermediate · Course · 1 - 3 Months

Skills you'll gain: Bootstrap (Front-End Framework), Browser Compatibility, Responsive Web Design, Web Design and Development, Cascading Style Sheets (CSS), Front-End Web Development, UI Components, React.js, Application Frameworks
★ 4.4 (105) · Intermediate · Course · 1 - 4 Weeks

LearnQuest
Skills you'll gain: Network Architecture, Emerging Technologies, Internet Of Things, Network Security, Network Protocols, Wireless Networks, Network Performance Management, Network Planning And Design, Network Engineering, Communication Systems, Mobile Security, Network Infrastructure, Cybersecurity, Telecommunications, Artificial Intelligence and Machine Learning (AI/ML), Vulnerability Assessments, Distributed Computing, Technology Strategies, Digital Signal Processing
★ 4.6 (66) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Adobe XD, Prototyping, User Experience Design, Usability Testing, UI/UX Research, Figma (Design Software), User Experience, Experience Design, Presentations, Responsive Web Design, Information Architecture, User Story, Usability, Storyboarding, User Research, Design Research, Design, Visual Design, Persona (User Experience), User Interface and User Experience (UI/UX) Design
★ 4.8 (154) · Beginner · Professional Certificate · 3 - 6 Months

Logical Operations
Skills you'll gain: Information Technology Infrastructure Library, Service Management, IT Service Management, Information Technology, IT Management, Information Technology Operations, Operations Management, Asset Management, Operations
★ 4.6 (81) · Mixed · Course · 1 - 4 Weeks

MedCerts
Skills you'll gain: Phlebotomy, Blood Collection, Venipuncture, Specimen Collection, Bloodborne Pathogens, Occupational Safety and Health Administration (OSHA), Infection Control, Capillary, Safety Standards, Laboratory Equipment, Asepsis, Healthcare Industry Knowledge, Patient-centered Care
Beginner · Course · 1 - 4 Weeks

Columbia University
Skills you'll gain: Portfolio Management, Investment Management, Portfolio Risk, Asset Management, Investments, Risk Modeling, Estimation, Market Liquidity, Risk Management, Financial Market, Financial Trading, Model Optimization, Finance, Equities, Securities (Finance), Statistical Methods, Risk Analysis, Transaction Processing, Securities Trading, Market Dynamics
★ 4.6 (49) · Intermediate · Course · 1 - 3 Months

Michigan State University
Skills you'll gain: Game Design, Peer Review, Storytelling, Video Game Development, Writing and Editing, Writing, Content Creation, Creative Thinking, Constructive Feedback, Visual Storytelling, Multimedia
★ 4.4 (66) · Beginner · Course · 1 - 3 Months

DeepLearning.AI
Skills you'll gain: Probability & Statistics, Statistical Analysis, Statistics, Data Literacy, Data Visualization, Statistical Hypothesis Testing, Statistical Visualization, Descriptive Statistics, Data Analysis, Analytics, Statistical Methods, Histogram, Plot (Graphics), Probability, Simulations, Probability Distribution, Correlation Analysis, Statistical Inference, Estimation, Sampling (Statistics)
★ 4.8 (63) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Key Performance Indicators (KPIs), Performance Measurement, Business Metrics, Process Improvement, Continuous Improvement Process, Performance Analysis, Business Process Improvement, Performance Metric, Performance Improvement, Operational Performance Management, Business Analytics, Business Analysis, Operational Efficiency
★ 4.6 (97) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Git (Version Control System), Version Control, Software Versioning, Software Development Tools, Project Management
★ 4.7 (116) · Beginner · Guided Project · Less Than 2 Hours