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.

Skills you'll gain: Respiration, Respiratory Care, Pulmonology, Pulmonary Function Testing, Physiology, Anatomy, Immunology, Diagnostic Tests, Patient Treatment, Medical Terminology, Radiography
Beginner · Course · 1 - 3 Months

Skills you'll gain: Open Web Application Security Project (OWASP), Application Security, Security Testing, Secure Coding, System Monitoring, DevSecOps, Application Performance Management, Continuous Monitoring, Code Review, Threat Modeling, Vulnerability Scanning, Vulnerability Assessments, Prometheus (Software), Software Development Life Cycle, Grafana
Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Mobile Development, React Native, Responsive Web Design, Browser Compatibility, HTML and CSS, Cross Platform Development, Web Design and Development, Javascript, Application Development, Web Development
Beginner · Course · 1 - 4 Weeks

University of California, Davis
Skills you'll gain: Chemical Engineering, Hazard Analysis, Process Engineering, Hazard Communication (HazCom), Safety Assurance, Occupational Health, Safety Training, Risk Management, Environment Health And Safety, Process Control, Accident Prevention, Risk Analysis, Incident Management, Safety Standards, Failure Analysis, Risk Mitigation, Personal protective equipment, Risk Management Framework, Engineering Analysis, Safety and Security
Advanced · Specialization · 3 - 6 Months

Johns Hopkins University
Skills you'll gain: Rmarkdown, Data Visualization, Statistical Visualization, Ggplot2, Data Import/Export, Data Visualization Software, R Programming, Tidyverse (R Package), Statistical Reporting, Data Manipulation, Scatter Plots, Data Wrangling, Histogram
Beginner · Course · 1 - 4 Weeks

University at Buffalo
Skills you'll gain: Electrical Systems, Electrical Wiring, Building Design, HVAC, Construction Inspection, Basic Electrical Systems, Engineering Calculations, Architectural Design, System Requirements, Mechanical Design, Building Codes, Structural Analysis, Cost Estimation
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Immunology, Molecular Biology, Physiology, Cell Biology, Biology, Biochemistry
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, Microsoft Servers, Security Controls, Enterprise Security, Active Directory, Identity and Access Management, Servers, Computer Security, System Configuration, Encryption
Beginner · Course · 1 - 3 Months

Fundação Instituto de Administração
Skills you'll gain: International Finance, Business Economics, Economics, Market Dynamics, Business Planning, Business Strategy, Supply And Demand, Investments
Build toward a degree
Beginner · Course · 1 - 4 Weeks

École normale supérieure
Skills you'll gain: Theoretical Computer Science, Combinatorics, Algorithms, Graph Theory, Computational Thinking, Mathematical Modeling, Probability
Mixed · Course · 1 - 3 Months

University of Minnesota
Skills you'll gain: UI/UX Research, User Research, Design Research, User Experience, User Centered Design, Ideation, Qualitative Research, User Interface (UI) Design, Surveys, User Story, Data Collection, Persona Development, Data Analysis, People Analytics
Mixed · Course · 1 - 3 Months

Skills you'll gain: Data Wrangling, Exploratory Data Analysis, Model Evaluation, Data Analysis, Data Transformation, Regression Analysis, Data Visualization, Data Manipulation, R Programming, Predictive Analytics, Statistical Analysis, Statistical Modeling, Data Science, Data Cleansing, Data Preprocessing, Forecasting, Data Import/Export, Performance Tuning
Intermediate · Course · 1 - 3 Months