Core Java courses can help you learn object-oriented programming, exception handling, multithreading, and Java Collections. You can build skills in writing efficient algorithms, debugging code, and developing user interfaces. Many courses introduce tools like Eclipse and IntelliJ IDEA, which are commonly used for coding and testing Java applications, along with frameworks such as Spring and Hibernate that facilitate web development and database management.

Skills you'll gain: HTML and CSS, Figma (Design Software), Front-End Web Development, User Interface (UI), Responsive Web Design, Web Design and Development, Mockups, Web Design, Web Content Accessibility Guidelines, Prototyping, Javascript, Web Development
Intermediate · Course · 1 - 3 Months

Skills you'll gain: Jest (JavaScript Testing Framework), Unit Testing, Test Case, React.js, API Testing, Test Driven Development (TDD), Software Testing, Mockups, Javascript
Intermediate · Guided Project · Less Than 2 Hours

University of Colorado Boulder
Skills you'll gain: Statistical Modeling, Data Science, Statistical Methods, Statistical Analysis, Model Evaluation, Regression Analysis, Predictive Modeling, R Programming, Machine Learning, Classification Algorithms, Supervised Learning, Unsupervised Learning, Machine Learning Algorithms
Build toward a degree
Intermediate · Course · 1 - 3 Months

Board Infinity
Skills you'll gain: Agile Methodology, Product Strategy, Product Design, Market Analysis, Target Market, Stakeholder Communications, Portfolio Management, Decision Making, Data Analysis, Technical Communication, Communication, Innovation, Complex Problem Solving, Key Performance Indicators (KPIs), Prioritization
Beginner · Specialization · 1 - 3 Months

Skills you'll gain: PySpark, MySQL, Data Pipelines, Apache Spark, Data Processing, SQL, Data Transformation, Data Manipulation, Distributed Computing, Python Programming, Debugging
Mixed · Course · 1 - 4 Weeks

Illinois Tech
Skills you'll gain: Bayesian Statistics, Data Analysis, Statistical Inference, Regression Analysis, Statistical Analysis, Statistical Modeling, Statistical Programming, Sampling (Statistics), R Programming, Markov Model, Logistic Regression, Probability, Simulations, Model Evaluation, Probability Distribution
Build toward a degree
Intermediate · Course · 1 - 3 Months

Johns Hopkins University
Skills you'll gain: Data Import/Export, Web Scraping, Tidyverse (R Package), Data Integration, Data Manipulation, Data Transformation, Relational Databases, Google Sheets, Unstructured Data, R Programming, Extensible Markup Language (XML), Spreadsheet Software, Databases, SQL, Application Programming Interface (API)
Beginner · Course · 1 - 3 Months

University of California, Davis
Skills you'll gain: Innovation, Digital Transformation, Digital Communications, Business Transformation, Data Storage, Fundraising and Crowdsourcing, Social Impact, Computational Thinking, Artificial Intelligence, Media Strategy, Information Privacy, Machine Learning
Beginner · Course · 1 - 4 Weeks

DeepLearning.AI
Skills you'll gain: LLM Application, Tool Calling, Retrieval-Augmented Generation, Large Language Modeling, Generative AI Agents, AI Workflows, Context Management, Prompt Engineering, Agentic systems, Data Persistence, System Design and Implementation
Intermediate · Project · Less Than 2 Hours

Skills you'll gain: Corporate Sustainability, Environmental Social And Corporate Governance (ESG), Corporate Strategy, Business Ethics, Organizational Strategy, Sustainable Business, Business Strategy, Philanthropy, Governance Risk Management and Compliance, Governance, Compliance Management, Strategic Sourcing, Procurement, Stakeholder Engagement, Law, Regulation, and Compliance, Ethical Standards And Conduct, Sustainability Reporting, Business Risk Management, Diversity and Inclusion
Mixed · Course · 1 - 4 Weeks
École Polytechnique Fédérale de Lausanne
Skills you'll gain: Scala Programming, Functional Design, Software Design Patterns, Unit Testing, Data Structures, Simulations
Intermediate · Course · 1 - 3 Months

Erasmus University Rotterdam
Skills you'll gain: R Programming, Statistical Modeling, Statistical Methods, Regression Analysis, Statistical Analysis, R (Software), Data Preprocessing, Data Quality, Model Evaluation
Intermediate · Course · 1 - 4 Weeks