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.

Rice University
Skills you'll gain: Basic Electrical Systems, Electrical Engineering, Torque (Physics), electromagnetics, Physics, Electrical Systems, Electronics, Electronic Components, Engineering Calculations, Mechanics, Applied Mathematics, Problem Solving, Scientific Visualization, Calculus, Integral Calculus, Differential Equations, Mathematical Modeling
★ 4.7 (269) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Autoencoders, Generative AI, Recurrent Neural Networks (RNNs), Convolutional Neural Networks, Reinforcement Learning, Generative Adversarial Networks (GANs), Generative Model Architectures, Artificial Intelligence and Machine Learning (AI/ML), Deep Learning, Unsupervised Learning, Machine Learning Methods, Transfer Learning, Model Optimization, Image Analysis, Artificial Neural Networks, Keras (Neural Network Library), Fine-tuning, Machine Learning, Artificial Intelligence, Computer Vision
★ 4.6 (297) · Intermediate · Course · 1 - 3 Months

University of Geneva
Skills you'll gain: Precision Medicine, Medical Science and Research, Data Ethics, Healthcare Ethics, Pharmacology, Health Informatics, Bioinformatics, Clinical Research, Biomedical Technology, Primary Care, Biotechnology, Clinical Research Ethics, General Medicine, Oncology, Pharmaceuticals, Health Policy, Pharmacotherapy, Molecular Biology, Diagnostic Tests, Patient Education And Counseling
★ 4.5 (417) · Intermediate · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Windows Servers, Authorization (Computing), Microsoft Windows, Authentications, Operating System Administration, User Accounts, Group Policy, User Provisioning, Microsoft Servers, Security Controls, Enterprise Security, Active Directory, Identity and Access Management, Software Installation, Role-Based Access Control (RBAC), Server Administration, Encryption, Network Planning And Design, Network Performance Management, Computer Networking
★ 4.7 (678) · Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Sustainability Reporting, Sustainable Business, Corporate Sustainability, Organizational Change, Sustainable Development, Business Reporting, Supply Chain, Sustainable Design, Proposal Development, Stakeholder Analysis, Environmental Social And Corporate Governance (ESG), Sustainable Systems, Supply Chain Management, Sustainability Standards, Annual Reports, Performance Reporting, Leadership and Management, Performance Improvement, Change Management, Stakeholder Engagement
★ 4.7 (371) · Intermediate · Specialization · 3 - 6 Months

École normale supérieure
Skills you'll gain: Theoretical Computer Science, Combinatorics, Algorithms, Graph Theory, Operations Research, Linear Algebra, Applied Mathematics, Mathematical Modeling, Solution Design, Probability
★ 4.7 (558) · Mixed · Course · 1 - 3 Months

Scrimba
Skills you'll gain: Responsive Web Design, JSON, User Interface (UI) Design, Color Theory, Cascading Style Sheets (CSS), User Interface (UI), HTML and CSS, Hypertext Markup Language (HTML), Restful API, Web Content Accessibility Guidelines, Event-Driven Programming, User Interface and User Experience (UI/UX) Design, Web Design, Typography, API Design, Web Applications, Digital Design, React.js, Javascript, Web Development
★ 4.7 (585) · Beginner · Specialization · 3 - 6 Months

Skills you'll gain: Exploratory Data Analysis, Data Wrangling, Statistical Analysis, Data Analysis, Model Evaluation, Data Transformation, R Programming, Data Visualization, Regression Analysis, Predictive Modeling, Statistical Methods, R (Software), Data Manipulation, Plot (Graphics), Data Science, Box Plots, Statistical Visualization, Correlation Analysis, Model Training, Tidyverse (R Package)
★ 4.7 (371) · Intermediate · Course · 1 - 3 Months

Google Cloud
Skills you'll gain: Identity and Access Management, Google Cloud Platform, Cloud API, User Accounts, Application Programming Interface (API), Cloud Services, Role-Based Access Control (RBAC), Cloud Platforms, Cloud Storage
★ 4.7 (300) · Beginner · Project · Less Than 2 Hours

West Virginia University
Skills you'll gain: Sales Management, Sales Strategy, Account Management, Sales, Sales Process, Strategic Planning, Sales Training, Inside Sales, General Sales Practices, Selling Techniques, Business Strategy, Outside Sales, Purchasing, Compensation Management, Goal Setting, Recruitment
★ 4.5 (307) · Mixed · Course · 1 - 4 Weeks

Universitat de Barcelona
Skills you'll gain: Emergency and Intensive Care, Medical Emergency, Acute Care, Triage, Emergency Medical Services, Patient Evaluation, Emergency Departments, Neurology, Intravenous Therapy, Health Assessment, Clinical Assessment, Interventional Radiology, Patient Treatment, Patient Referral
★ 4.8 (25) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Respiratory Care, Respiration, Nursing Process, Cardiology, Pulmonology, Human Musculoskeletal System, Medical Terminology, Health Assessment, Nursing, Nursing Care, Nursing and Patient Care, Physiology, Health Care, Psychosocial Assessments, Public Health, Healthcare Industry Knowledge, Medical Surgical Nursing, Health Care Procedure and Regulation, Infection Control, Emergency Response
★ 4.7 (7) · Beginner · Course · 1 - 4 Weeks