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 Michigan
Skills you'll gain: Exploratory Data Analysis, Rmarkdown, R (Software), Plot (Graphics), Tidyverse (R Package), Statistical Visualization, Data Visualization, Data Visualization Software, R Programming, Data Analysis, Ggplot2, Data Wrangling, Scatter Plots, Data Manipulation, Histogram, Statistical Reporting, Scripting, Package and Software Management, Scripting Languages, Data Transformation
★ 5 (8) · Beginner · Course · 1 - 4 Weeks

Scrimba
Skills you'll gain: Cascading Style Sheets (CSS), Responsive Web Design, HTML and CSS, Web Design and Development, Front-End Web Development, Web Design, Computer Programming
★ 4.9 (47) · Intermediate · Course · 1 - 4 Weeks

Skills you'll gain: Brand Marketing, Branding, Brand Strategy, Brand Awareness, Creative Design, Visual Storytelling, Target Audience, Brand Management, User Feedback, Customer Insights, Storytelling, Growth Strategies, Marketing, Driving engagement, Market Research, User Research, Promotional Strategies, Social Media, Customer Analysis, Digital Marketing
★ 4.6 (17) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Embedded Systems, Embedded Software, Automation Engineering, Robotics, Control Systems, Machine Controls, Electronic Systems, Industrial Engineering, Computer Systems, Internet Of Things, Automation, Vibrations, Electronic Hardware, C (Programming Language), Power Electronics, Peripheral Devices, Electronics, Wireless Networks, Medical Devices, Electric Power Systems
★ 4.4 (17) · Intermediate · Specialization · 3 - 6 Months

University of California, Irvine
Skills you'll gain: Grammar, English Language
★ 4.9 (17) · Intermediate · Course · 1 - 4 Weeks

University of Illinois Urbana-Champaign
Skills you'll gain: Deep Learning, Generative AI, Generative Model Architectures, Applied Machine Learning, Machine Learning Methods, Graph Theory, Network Analysis, Artificial Neural Networks, Network Model, Health Informatics, Laboratory Experience, Autoencoders, Predictive Modeling, Unsupervised Learning, Data Synthesis
★ 3.6 (15) · Advanced · Course · 1 - 4 Weeks

Skills you'll gain: Employee Surveys, Employee Engagement, User Feedback, Performance Measurement, Microsoft 365, Performance Analysis, Business Research, Customer experience improvement, Customer Insights, Analysis, Customer Analysis, Market Research, User Research, Business Strategy
★ 4.4 (24) · Beginner · Guided Project · Less Than 2 Hours

Skills you'll gain: API Testing, Test Automation, Test Script Development, Test Tools, Application Programming Interface (API), Restful API, Software Testing, Code Reusability, Configuration Management, Java Programming, Maintainability
★ 4.3 (31) · Intermediate · Guided Project · Less Than 2 Hours

University of Colorado Boulder
Skills you'll gain: Robotics, Graph Theory, Algorithms, Python Programming
★ 4.4 (18) · Intermediate · Course · 1 - 3 Months

Amazon Web Services
Skills you'll gain: Amazon Bedrock, Generative AI Agents, Retrieval-Augmented Generation, Prompt Engineering, Generative AI, AI Workflows, Agentic Workflows, LLM Application, Amazon Web Services, Context Management, Agentic systems
★ 4.5 (18) · Beginner · Course · 1 - 4 Weeks

Skills you'll gain: Intrusion Detection and Prevention, Continuous Monitoring, Threat Management, Firewall, Incident Response, Network Security, Threat Detection, Network Monitoring, System Monitoring, Event Monitoring, Infrastructure Security, Cybersecurity, Anomaly Detection
★ 4.4 (48) · Advanced · Course · 1 - 4 Weeks

Queen Mary University of London
Skills you'll gain: Tax, Tax Laws, Law, Regulation, and Compliance, Cloud Services, Tax Compliance, Cloud Computing, Regulation and Legal Compliance, Cloud Storage, Corporate Tax, Income Tax, General Data Protection Regulation (GDPR), Data Access, Data Sharing, Digital Forensics, Interoperability, Competitive Analysis, Market Analysis, Market Dynamics
★ 4.8 (43) · Beginner · Course · 1 - 4 Weeks