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Learning links
10 September 2025
PowerBI
Kasper On BI

Blog by a Microsoft program manager sharing deep-dive explanations of Power BI features and integrations with Azure and Excel.

Data Analytics
FlowingData

Visualization-focused tutorials and guides on analyzing and presenting data effectively.

Data Analytics
DataCamp Free Courses

Free beginner-friendly courses in data analysis with Python, R, and SQL; includes guided projects.

Data Analytics
Tableau Public Resources

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

R
DataCamp (Free R Tutorials)

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

Data Analytics
edX - Data Analysis for Life Sciences

Harvard's free online courses teaching statistics, inference, modeling, and machine learning in the context of data science.

GRE Prep
GregMat (YouTube)

Popular YouTube channel with hundreds of free GRE quant and verbal walkthroughs, strategies, and practice problem explanations.

Math
OpenStax Mathematics

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

Math
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.

Books
AI Engineering

Andrew Ng

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

Python
GeeksforGeeks Python Programming

Extensive collection of Python tutorials, code snippets, and explanations for basic to advanced topics, including algorithms.

Wargaming
Naval War College ? Wargaming Department

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

R
R-Bloggers

Aggregator of hundreds of blogs covering R tutorials, packages, and real-world data science applications.

PowerBI
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.

Python
LearnPython.org

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

Databases & SQL
Khan Academy - Intro to SQL

Beginner-friendly course teaching SQL fundamentals with practice problems and video explanations.

R
ModernDive: Statistical Inference via Data Science

Free online textbook teaching statistical inference and regression using R and tidyverse methods.

Wargaming
Marine Corps Warfighting Lab ? Wargaming Division

USMC wargaming division supporting concept development and force design through iterative gaming and analysis.

Databases & SQL
SQLZoo

Hands-on SQL practice with guided problems, quizzes, and interactive database queries to reinforce concepts.

Math
Saylor Academy - Mathematics

Free, full-length math courses (Linear Algebra, Abstract Algebra, Real Analysis, etc.) with exams and certificates.