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: Data Preprocessing, Unsupervised Learning, Model Evaluation, Time Series Analysis and Forecasting, Supervised Learning, Machine Learning, Machine Learning Methods, Artificial Intelligence and Machine Learning (AI/ML), Applied Machine Learning, Machine Learning Algorithms, Data Processing, Model Training, Feature Engineering, Artificial Intelligence, Deep Learning, Classification Algorithms, Model Optimization, Regression Analysis
★ 4.4 (30) · Intermediate · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Tidyverse (R Package), Data Wrangling, R (Software), Data Cleansing, Data Transformation, Data Manipulation, R Programming, Data Science, Exploratory Data Analysis, Data Analysis, Data Management, File Management, Data Visualization
★ 4.4 (54) · Beginner · Course · 1 - 3 Months

University of Colorado Boulder
Skills you'll gain: Strategic Communication, Communication Planning, Target Audience, Campaign Planning, Corporate Communications, Stakeholder Communications, Public Relations, Marketing Communications, Advertising Campaigns, Media Strategy, Brand Strategy, Communication Strategies, Integrated Marketing Communications, Target Market, Media and Communications, Media Planning, Branding, Earned Media, Brand Management, Business Strategy
★ 4.5 (48) · Beginner · Course · 1 - 4 Weeks

University of Colorado System
Skills you'll gain: Requirements Analysis, Security Requirements Analysis, Requirements Elicitation, Goal Setting, User Requirements Documents, Unified Modeling Language, Meeting Facilitation, Conflict Management, Discussion Facilitation, Risk Management Framework, Analysis, Negotiation, Security Awareness
★ 4.7 (66) · Beginner · Course · 1 - 4 Weeks

American Museum of Natural History
Skills you'll gain: Life Sciences, Biology, Environment, Taxonomy, Laboratory Research, Science and Research, Scientific Methods, Timelines, Research, Laboratory Experience
★ 4.8 (70) · Beginner · Course · 1 - 3 Months

University of Illinois Urbana-Champaign
Skills you'll gain: Network Infrastructure, General Networking, Network Protocols, Network Routers, Network Architecture, Networking Hardware, Internet Of Things, Network Routing, Wireless Networks, Local Area Networks, Network Switches, Virtual Local Area Network (VLAN), Enterprise Architecture, Network Security
★ 4.8 (42) · Intermediate · Course · 1 - 4 Weeks

Coursera
Skills you'll gain: R (Software), R Programming, Computational Logic, Arithmetic, Statistical Programming, Development Environment, Programming Principles, Data Import/Export
★ 4.5 (52) · Beginner · Guided Project · Less Than 2 Hours

ISAE-SUPAERO
Skills you'll gain: Mechanical Engineering, Mechanics, Engineering Analysis, Engineering Calculations, Engineering, Mathematical Modeling, Physics
★ 4.7 (64) · Intermediate · Course · 1 - 4 Weeks
Rice University
Skills you'll gain: Computer Science, Computer Programming, Computational Thinking, Programming Principles, Algorithms, Python Programming
★ 4.8 (116) · Intermediate · Course · 1 - 4 Weeks

Rutgers the State University of New Jersey
Skills you'll gain: Purchasing, Procurement, Strategic Sourcing, Supply Management, Supply Chain, Supply Chain Management
★ 4.6 (57) · Beginner · Course · 1 - 4 Weeks

L&T EduTech
Skills you'll gain: Robotics, Automation Engineering, Machine Controls, Internet Of Things, Control Systems, Automation, Image Analysis, Industrial Engineering, Computer Vision, Equipment Design, Engineering, Mechanical Design
★ 4.5 (34) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Document Management, Microsoft Power Platform, Data Entry, Microsoft 365, Application Design
★ 4.2 (45) · Beginner · Guided Project · Less Than 2 Hours