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Learning links
10 September 2025
GRE Prep
Manhattan Review Free GRE Resources

Free practice problems, diagnostic tests, and study tips from test prep experts.

Python
W3Schools Python

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

Math
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.

GRE Prep
Ready4GRE Vocabulary App

Free app with flashcards, quizzes, and personalized study plans for GRE vocabulary practice.

Data Analytics
Tableau Public Resources

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

Data Analytics
Microsoft Learn - Data Analysis

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

Books
Designing Machine Learning Systems

Chip Huyen

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

Books
Why Machines Learn

Anil Ananthaswamy

A deep dive into the elegant mathematical principles behind machine learning

PowerBI
Power BI Guided Learning (Microsoft)

Step-by-step tutorials directly from Microsoft, teaching data connection, modeling, visualization, and publishing dashboards.

GRE Prep
Manhattan Prep GRE Resources

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

Wargaming
PAXsims (Conflict Simulation & Wargaming)

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

Wargaming
King?s Wargaming Network

Academic network advancing theory and application of wargaming for research and teaching within Security Studies.

Data Analytics
MOOC.fi - Introduction to Data Analysis with Python

Free course from University of Helsinki teaching data analysis workflows with Python and Pandas.

Data Analytics
Analytics Vidhya

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

PowerBI
RADACAD Power BI Blog

Practical tutorials and tips on Power BI modeling, DAX, Power Query, and real-world scenarios written by MVPs.

General Learning
Udemy

Udemy is a global learning platform offering self-paced courses in analytics, statistics, and decision modeling?ideal for those pursuing or preparing for a U.S. Army ORSA role.

Wargaming
Marine Corps University Press ? Wargaming Topic

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

Math
Paul?s Online Math Notes

Comprehensive lecture notes, examples, and problem sets on calculus, differential equations, algebra, and more, written in an accessible format.

Python
Programiz Python

Beginner-friendly tutorials covering Python basics, data structures, object-oriented programming, and standard libraries.

Books
Build a Large Language Model from Scratch

Charanpal Dhanjal

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