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.

American Psychological Association
Skills you'll gain: Descriptive Statistics, Data Literacy, Graphing, Statistical Visualization, Statistical Hypothesis Testing, Probability & Statistics, Statistical Inference, Quantitative Research, Statistics, Statistical Analysis, Statistical Methods, Descriptive Analytics, Sample Size Determination, Data Analysis, Sampling (Statistics), Exploratory Data Analysis, Science and Research, Psychology, Bayesian Statistics, Research Design
★ 4.6 (67) · Beginner · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Rmarkdown, Tidyverse (R Package), Ggplot2, Spatial Data Analysis, Data Visualization Software, Plot (Graphics), Data Visualization, Statistical Visualization, Spatial Analysis, Geospatial Information and Technology, Data Manipulation, Scatter Plots, R (Software), Plotly, Interactive Data Visualization, R Programming, Geospatial Mapping, Statistical Reporting, Data Wrangling, Graphing
★ 4.9 (81) · Mixed · Course · 1 - 4 Weeks

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

Scrimba
Skills you'll gain: HTML and CSS, Responsive Web Design, Cascading Style Sheets (CSS), Hypertext Markup Language (HTML), Web Design and Development, File Management, Web Design, Front-End Web Development, Web Development
★ 4.8 (74) · Beginner · Course · 1 - 4 Weeks

University of Michigan
Skills you'll gain: AI powered creativity, Generative AI, AI literacy, Artificial Intelligence, Image Analysis, Creativity, Design Research, Responsible AI, Problem Solving, Critical Thinking
★ 4.5 (75) · Beginner · Course · 1 - 3 Months

University of Colorado System
Skills you'll gain: Concision, Grant Writing, Sample Size Determination, Institutional Review Board (IRB), Grant Applications, Proposal Writing, Biostatistics, Proposal Development, Writing, Clinical Research Ethics, Medical Science and Research, Statistical Analysis, Persuasive Communication, Data Analysis, Clinical Research, Statistical Methods, Analysis, Research Design, Science and Research, Resource Allocation
★ 4.9 (61) · Intermediate · Specialization · 3 - 6 Months

Skills you'll gain: Statistical Process Controls, Statistical Hypothesis Testing, Lean Methodologies, Process Improvement, Six Sigma Methodology, Kaizen Methodology, Lean Six Sigma, Benchmarking, Process Capability, Risk Analysis, Quality Improvement, Process Improvement and Optimization, Process Analysis, Statistical Analysis, Operational Efficiency, Continuous Improvement Process, Team Leadership, Team Management, Root Cause Analysis, Regression Analysis
★ 4.8 (65) · Intermediate · Specialization · 1 - 3 Months

Skills you'll gain: Video Editing, Video Production, Adobe Premiere, Photo/Video Production and Technology, Storytelling, Post-Production, Visual Storytelling, Adobe Creative Cloud, Content Creation, Timelines, Editing, Creativity, Color Matching
★ 4.1 (58) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: Succession Planning, Human Resources Management and Planning, Human Resources, Employee Engagement, Recruitment Strategies, Recruitment, Human Resource Management, Talent Recruitment, Human Resource Strategy, Human Capital, Performance Management, Human Resources Information System (HRIS), Talent Management, HR Tech, Drive Engagement, Full Cycle Recruitment, Human Resources Software, Performance Appraisal, Human Resource Policies, Workforce Development
★ 4.7 (60) · Intermediate · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Unity Engine, Video Game Development, C# (Programming Language), Game Design, Object Oriented Design, Object Oriented Programming (OOP), Application Design, Software Design, Programming Principles, Program Development, Application Development, Scripting
★ 4.8 (68) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Shiny (R Package), Dashboard Creation, Dashboard, Ggplot2, Interactive Data Visualization, Data Visualization Software, R (Software), Application Development, Data Sharing, UI Components, Application Deployment
★ 4.9 (72) · Mixed · Course · 1 - 4 Weeks

Yale University
Skills you'll gain: Environmental Issue, Environment, Biology, Environment and Resource Management, Social Justice, Culture, Natural Resource Management, International Relations, Sustainable Development, Sustainable Systems, Life Sciences, Anthropology, World History, Intercultural Competence, Liberal Arts, Ethical Standards And Conduct, Cultural Diversity, European History, Climate Change Mitigation, Advocacy
★ 4.8 (65) · Beginner · Course · 1 - 3 Months