R-Bloggers
Aggregator of hundreds of blogs covering R tutorials, packages, and real-world data science applications.
LearnPython.org
Interactive, browser-based Python tutorials ranging from basic syntax to advanced modules.
Tableau Public Resources
Free resources and tutorials for using Tableau to create interactive visualizations and dashboards.
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.
GeeksforGeeks Python Programming
Extensive collection of Python tutorials, code snippets, and explanations for basic to advanced topics, including algorithms.
Microsoft Learn ? Power BI
Official Microsoft Learn platform with guided, hands-on modules for Power BI, covering everything from basics to advanced analytics.
Power BI Community
Official Power BI community forum where users can ask questions, share solutions, and browse a large knowledge base of solved problems.
AI Engineering
Andrew Ng
A practical framework for building real-world AI applications from foundational principles
GregMat (YouTube)
Popular YouTube channel with hundreds of free GRE quant and verbal walkthroughs, strategies, and practice problem explanations.
Kasper On BI
Blog by a Microsoft program manager sharing deep-dive explanations of Power BI features and integrations with Azure and Excel.
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.
IBM Data Analyst Professional Certificate (Audit Free)
Covers data analysis with Excel, SQL, Python, and data visualization tools, including projects and case studies; free in audit mode.
Princeton Review GRE Practice
Free practice test access, strategy sessions, and sample GRE questions.
Dataquest Free Data Analysis Courses
Browser-based lessons in Python, SQL, and data visualization; first modules free.
Stack Overflow - R Tag
A huge developer community answering detailed questions about R, packages, and applied statistics.
RADACAD Power BI Blog
Practical tutorials and tips on Power BI modeling, DAX, Power Query, and real-world scenarios written by MVPs.
Kaplan GRE Free Resources
Free practice tests, sample questions, and study materials from Kaplan.
3Blue1Brown (YouTube)
Visual, intuitive explanations of advanced concepts like linear algebra, calculus, Fourier transforms, and neural networks using stunning animations.