Microsoft Learn - Data Analysis

Free learning paths covering data analysis basics and Power BI dashboards directly from Microsoft.

OpenStax Mathematics

Peer-reviewed, openly licensed textbooks covering college algebra, calculus, and statistics; downloadable for free in PDF or web format.

Analytics Vidhya

Wide range of free tutorials, guides, and case studies on data analytics, machine learning, and business intelligence.

Kaplan GRE Free Resources

Free practice tests, sample questions, and study materials from Kaplan.

Tableau Public Resources

Free resources and tutorials for using Tableau to create interactive visualizations and dashboards.

StatQuest with Josh Starmer (YouTube)

Clear and approachable explanations of statistics and data analysis, breaking down complex concepts into simple steps.

Guy in a Cube (YouTube)

Popular YouTube channel run by Microsoft employees, offering weekly tutorials, best practices, and troubleshooting tips for Power BI.

UK Fight Club (Professional Wargaming Network)

Community that promotes professional military wargaming and simulation activities across UK defense.

PAXsims (Conflict Simulation & Wargaming)

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

Naval War College ? Wargaming Department

Department page describing applied gaming, methods, and how wargaming supports leadership education and analysis.

The Carpentries - Data Carpentry

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

Art of Problem Solving (AoPS) Online Resources

Challenging problems, explanations, and articles designed for advanced high school and college-level students interested in problem solving and Olympiad-style math.

Automate the Boring Stuff with Python

A free online book teaching Python through practical examples like automating tasks, web scraping, and file management.

LearnPython.org

Interactive, browser-based Python tutorials ranging from basic syntax to advanced modules.

Stack Overflow - R Tag

A huge developer community answering detailed questions about R, packages, and applied statistics.

EDX ? Analyzing and Visualizing Data with Power BI (Audit Free)

University of Illinois & Microsoft course teaching Power BI for analytics and reporting, free in audit mode.

Designing Machine Learning Systems

Chip Huyen

A practical blueprint for building production-ready ML systems with scalability and reliability

Swirl: Learn R in R

An interactive R package that teaches R programming and data science concepts directly inside the R console.

CrunchPrep GRE Blog

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

Marine Corps University Press ? Wargaming Topic

Curated publications on wargaming theory and practice relevant to military education and planning.