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.
University of California, Santa Cruz
Skills you'll gain: Programming Principles, Program Development, Computational Logic, Memory Management
★ 4.5 (6.8K) · Beginner · Course · 1 - 3 Months

École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Apache Spark, Apache Hadoop, Application Design, User Interface (UI), Distributed Computing, Programming Principles, Leaflet (Software), Big Data, Data Processing, Software Design, Data Structures, Software Design Patterns, Functional Design, Object Oriented Design, Data Manipulation, Object Oriented Programming (OOP), Interactive Data Visualization, Scientific Visualization, Algorithms
★ 4.7 (11K) · Intermediate · Specialization · 3 - 6 Months

Coursera
Skills you'll gain: Portfolio Risk, Investment Management, Risk Management, Financial Analysis, Financial Management, Risk Modeling, Risk Analysis, Portfolio Management, Financial Market, Investments, Statistics
★ 4.3 (2.2K) · Intermediate · Guided Project · Less Than 2 Hours

Università Bocconi
Skills you'll gain: Private Equity, Business Valuation, Investment Management, Entrepreneurial Finance, Capital Markets, Mergers & Acquisitions, Investments, Equities, Portfolio Management, Financial Management, Tax Management, Tax Laws, Entrepreneurship, Financial Regulation, Due Diligence, Fundraising, Contract Negotiation, Cash Flows, Governance
★ 4.8 (9.5K) · Mixed · Course · 1 - 3 Months

University at Buffalo
Skills you'll gain: Blockchain, Cryptography, Transaction Processing, Cryptographic Protocols, Network Protocols, Payment Systems, Distributed Computing, Virtual Environment, Data Integrity, Virtual Machines, Algorithms, Verification And Validation, User Accounts
★ 4.6 (7.8K) · Beginner · Course · 1 - 4 Weeks
Johns Hopkins University
Skills you'll gain: Maternal Health, Child Health, Epidemiology, Public Health, Crisis Intervention, Public Health and Disease Prevention, Postpartum Care, Mental Health Diseases and Disorders, Infectious Diseases, Health Care Procedure and Regulation, Surveys, Community Health, Psychosocial Assessments, Health Disparities, Mental and Behavioral Health Specialties, Sanitation, Emergency Response, Infant Care, Ethical Standards And Conduct, Nutrition Education
★ 4.7 (144) · Beginner · Course · 1 - 3 Months

L&T EduTech
Skills you'll gain: Fire And Life Safety, Building Codes, Pump Stations, Schematic Diagrams, Blueprint Reading, Process Flow Diagrams, Construction, Hydraulics, Safety Standards, Plumbing, Equipment Design, Building Services Engineering, Building Design, Facility Management and Maintenance, Health And Safety Standards, Engineering Drawings, Structural Engineering, Safety and Security, Hazard Analysis, Accident Prevention
★ 4.6 (131) · Intermediate · Specialization · 3 - 6 Months

University of California, Davis
Skills you'll gain: Data Visualization, Interactive Data Visualization, Data Visualization Software, Data Presentation, Data Literacy, Dashboard Creation, Data Ethics, Data Storytelling, Visualization (Computer Graphics), Dashboard, Tableau Software, Data Manipulation, Data Import/Export, Data Analysis, Analytical Skills
★ 4.5 (6.8K) · Beginner · Course · 1 - 4 Weeks
Michigan State University
Skills you'll gain: Photography, Peer Review, Photo/Video Production and Technology, Image Quality, Creativity
★ 4.8 (5.4K) · Mixed · Course · 1 - 4 Weeks

The Hong Kong University of Science and Technology
Skills you'll gain: Differential Equations, Linear Algebra, Matlab, Engineering Analysis, Numerical Analysis, Integral Calculus, Mathematical Software, Mechanical Engineering, Calculus, Engineering Calculations, electromagnetics, Algebra, Applied Mathematics, Mathematical Modeling, Engineering, Simulation and Simulation Software, Advanced Mathematics, Geometry, Computational Thinking, Mechanics
★ 4.8 (7.8K) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Multimodal Prompts, Prompt Engineering, Prompt Engineering Tools, Prompt Patterns, Responsible AI, AI literacy, Context Engineering
★ 4.8 (4.4K) · Beginner · Course · 1 - 4 Weeks
University of Michigan
Skills you'll gain: Cascading Style Sheets (CSS), Web Content Accessibility Guidelines, HTML and CSS, Web Design, Responsive Web Design, Hypertext Markup Language (HTML), Web Development Tools, Web Development, Typography, Programming Principles, Debugging
★ 4.8 (9.7K) · Beginner · Course · 1 - 3 Months