LearnPython.org

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

Harvard Business School Online - Data Science Ready (Free Modules)

Intro modules teaching how analytics applies to business decisions, tailored for managers and analysts.

CS50?s Introduction to Python

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

Designing Machine Learning Systems

Chip Huyen

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

Connections Wargaming Conference

Annual international conference linking defense, industry, and academia to advance professional wargaming practice.

Coursera - R Programming (Audit Free)

Johns Hopkins University?s R Programming course (part of the Data Science Specialization), free in audit mode with videos and quizzes.

MySQL Tutorial

Extensive resource for learning MySQL with examples, from installation and schema design to joins and triggers.

FreeCodeCamp - Data Analysis with Python

Full curriculum teaching Python for data analysis, including Pandas, NumPy, data cleaning, and visualization, with projects.

The AI-Driven Leader

Erik R. Peterson

A guide to leveraging AI for smarter decision-making and leadership strategies

UK Fight Club (Professional Wargaming Network)

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

DataCamp (Free R Tutorials)

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

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.

Analytics Vidhya

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

SQLZoo

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

Stack Overflow - R Tag

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

PAXsims (Conflict Simulation & Wargaming)

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

SQLite Tutorial

Focused tutorials on SQLite, covering SQL basics, database management, and practical coding examples.

Programiz Python

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

Paul?s Online Math Notes

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

UC Berkeley Data 8 (Foundations of Data Science)

Introductory data science/analytics course using Python; includes lectures, labs, and exercises for free online.