The Carpentries - Data Carpentry

Community-driven lessons for researchers covering data organization, cleaning, visualization, and analysis in R, Python, and SQL.

Coursera - Math for Machine Learning (Audit Free)

University of London courses on linear algebra, multivariate calculus, and statistics for machine learning, available free in audit mode.

Microsoft Learn ? Power BI

Official Microsoft Learn platform with guided, hands-on modules for Power BI, covering everything from basics to advanced analytics.

Nexus: A Brief History of Information Networks

Brian Christian

A sweeping narrative on the evolution and impact of global information networks

CrunchPrep GRE Blog

Guides and strategies for GRE preparation including word lists, essay templates, and quantitative shortcuts.

PAXsims (Conflict Simulation & Wargaming)

Long-running blog on serious games and wargaming for policy, education, and analysis with news, methods, and reviews.

DataCamp

DataCamp is an online learning platform that specializes in data science, analytics, and artificial intelligence, offering interactive courses in Python, SQL, R, and other key technologies. Learners can build practical skills through hands-on coding exercises, real-world projects, and guided career tracks?all accessible from a browser at their own pace.

Kaggle Learn - Data Analysis

Hands-on mini-courses for Python, R, SQL, and visualization with Jupyter notebooks that run directly in the browser.

W3Schools Python

Step-by-step interactive lessons for Python basics, data structures, and functions, with hands-on coding snippets.

Google Data Analytics Certificate (Audit Free)

Comprehensive beginner-to-intermediate program covering spreadsheets, SQL, R, visualization, and analytics workflows; free in audit mode.

Enterprise DNA Blog

Tutorials and case studies focused on practical Power BI usage, advanced DAX, and visualization techniques.

Build a Large Language Model from Scratch

Charanpal Dhanjal

A hands-on guide to constructing your own LLM using modern machine learning techniques

CS50?s Introduction to Python

Harvard?s free course introducing programming using Python, with video lectures, notes, and problem sets.

CRAN R Project Documentation

Official manuals, FAQs, and reference documentation for the R language from the Comprehensive R Archive Network.

Manhattan Prep GRE Resources

Free GRE study materials, strategy guides, and practice question sets.

CNA ? Gaming & Integration Program

Designs, facilitates, and analyzes sponsor-focused wargames for DoD and government decision-makers.

ETS GRE Official Prep

Free official materials from ETS including practice questions, POWERPREP online practice tests, and test-taker tips.

AI Engineering

Andrew Ng

A practical framework for building real-world AI applications from foundational principles

Python.org Official Tutorial

The official Python tutorial covering core concepts, syntax, and standard library basics directly from the maintainers.

DataCamp (Free R Tutorials)

While DataCamp is subscription-based, it offers free introductory R courses covering basics, data manipulation, and visualization.