CrunchPrep GRE Blog

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

FlowingData

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

UK Fight Club (Professional Wargaming Network)

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

Designing Machine Learning Systems

Chip Huyen

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

edX

edX is an American massive open online course provider created by Harvard and MIT. It hosts online university-level courses in a wide range of disciplines to a worldwide student body, including some courses at no charge.

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.

Swirl: Learn R in R

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

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

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

OpenLearn - Learn to Code for Data Analysis

Free Open University course introducing Python programming in the context of data analysis.

Nexus: A Brief History of Information Networks

Brian Christian

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

Marine Corps University Press ? Wargaming Topic

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

W3Schools Python

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

AI Engineering

Andrew Ng

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

GeeksforGeeks Python Programming

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

ETS GRE Official Prep

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

Kasper On BI

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

SQL Shack ? Power BI

Collection of practical Power BI tutorials and tips, especially useful for SQL Server professionals integrating BI dashboards.

HackerRank SQL Domain

SQL challenges of varying difficulty levels with instant online feedback, great for structured practice.

PostgreSQL Tutorial

Free tutorials covering PostgreSQL features, SQL basics, stored procedures, and advanced database functions.

Real Python (Free Articles)

In-depth tutorials, explanations, and code examples for beginners to advanced Python developers, with a mix of free and premium content.