Free courses can help you learn coding languages like Python and JavaScript, data analysis techniques, and web development fundamentals. You can build skills in problem-solving, algorithm design, and creating interactive websites. Many courses introduce tools such as Git for version control, SQL for database management, and various frameworks that streamline web development, allowing you to apply your skills in practical projects.

University of California, Irvine
Skills you'll gain: Grammar, English Language, Language Learning, Language Competency
Intermediate · Course · 1 - 4 Weeks

University of California, Irvine
Skills you'll gain: English Language, Grammar, Oral Comprehension, Oral-Motor Skills, Language Competency, Language Learning
Beginner · Course · 1 - 4 Weeks

Caltech
Skills you'll gain: Science and Research, Research, General Science and Research, Physical Science, Scientific Methods, Life Sciences, Physics, Water Resources, Chemistry, Environment, Biology, Hydrology
Intermediate · Course · 1 - 3 Months

Packt
Skills you'll gain: Swift Programming, Memory Management, Apple iOS, iOS Development, Apple Xcode, Code Reusability, Mobile Development, Cross Platform Development, Functional Design, Maintainability, Object Oriented Programming (OOP)
Advanced · Course · 3 - 6 Months

University of California San Diego
Skills you'll gain: Big Data, Apache Hadoop, Scalability, Data Processing, Data Science, Distributed Computing, Unstructured Data, Data Infrastructure, Data Analysis, Data Quality, File Systems
Mixed · Course · 1 - 3 Months

University of Pennsylvania
Skills you'll gain: Research, Energy and Utilities, Vocabulary, Learning Strategies, Climate Change Mitigation, Literacy, English Language, Sustainable Technologies, Environment, Environmental Issue, Language Learning, Scientific Methods, Environmental Science, Grammar
Beginner · Course · 1 - 3 Months

Atlassian
Skills you'll gain: Git (Version Control System), Version Control, GitHub, Bitbucket, Software Versioning, Software Configuration Management, Continuous Integration, Command-Line Interface, Collaborative Software
Mixed · Course · 1 - 4 Weeks

Johns Hopkins University
Skills you'll gain: Ggplot2, Software Documentation, Open Source Technology, R (Software), Plot (Graphics), Tidyverse (R Package), Package and Software Management, Web Scraping, Data Manipulation, Data Visualization Software, Leaflet (Software), R Programming, Data Wrangling, Data Visualization, Data Preprocessing, Technical Documentation, Unit Testing, Data Cleansing, Object Oriented Programming (OOP), Object Oriented Design
Beginner · Specialization · 3 - 6 Months

McMaster University
Skills you'll gain: Experimentation, Scientific Visualization, Plot (Graphics), Data Visualization, Predictive Modeling, Pareto Chart, Predictive Analytics, Model Optimization, Regression Analysis, A/B Testing, Statistical Modeling, Process Optimization, Statistical Software, Statistical Methods, Analysis, Data Analysis Software, Mathematical Modeling, R Programming, Data Analysis, Statistical Analysis
Intermediate · Course · 1 - 3 Months

University of California, Irvine
Skills you'll gain: Verbal Communication Skills, Oral Expression, Presentations, Public Speaking, Lecturing, Non-Verbal Communication, Peer Review, Constructive Feedback, Communication Strategies, Organizational Skills, Planning
Intermediate · Course · 1 - 4 Weeks

Vanderbilt University
Skills you'll gain: Claude Code, Anthropic Claude, Multimodal Prompts, Prompt Engineering, Prompt Patterns, Generative AI Agents, AI Orchestration, Context Engineering, Code Reusability, AI Workflows, Software Development, Generative AI, Software Quality Assurance, Software Development Life Cycle, Automation, Artificial Intelligence, Software Architecture, Software Testing, Software Design, Software Development Methodologies
Beginner · Course · 1 - 3 Months

The State University of New York
Skills you'll gain: Time Series Analysis and Forecasting, R (Software), Forecasting, R Programming, Statistical Analysis, Model Evaluation, Data Analysis, Statistical Programming, Data Visualization, Statistical Visualization, Statistical Software, Mathematical Modeling, Statistical Methods, Statistical Modeling, Predictive Analytics, Predictive Modeling, Correlation Analysis, Descriptive Statistics, Statistical Inference, Data Transformation
Intermediate · Course · 1 - 3 Months