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.
Microsoft Learn - Data Analysis
Free learning paths covering data analysis basics and Power BI dashboards directly from Microsoft.
SQLite Tutorial
Focused tutorials on SQLite, covering SQL basics, database management, and practical coding examples.
Enterprise DNA Blog
Tutorials and case studies focused on practical Power BI usage, advanced DAX, and visualization techniques.
Princeton Review GRE Practice
Free practice test access, strategy sessions, and sample GRE questions.
Guy in a Cube (YouTube)
Popular YouTube channel run by Microsoft employees, offering weekly tutorials, best practices, and troubleshooting tips for Power BI.
W3Schools Python
Step-by-step interactive lessons for Python basics, data structures, and functions, with hands-on coding snippets.
Kaplan GRE Free Resources
Free practice tests, sample questions, and study materials from Kaplan.
Khan Academy - Advanced Math
Free structured lessons with videos and practice exercises covering algebra, calculus, statistics, linear algebra, and differential equations.
edX - Data Analysis for Life Sciences
Harvard's free online courses teaching statistics, inference, modeling, and machine learning in the context of data science.
PostgreSQL Tutorial
Free tutorials covering PostgreSQL features, SQL basics, stored procedures, and advanced database functions.
Analytics Vidhya
Wide range of free tutorials, guides, and case studies on data analytics, machine learning, and business intelligence.
Power BI Guided Learning (Microsoft)
Step-by-step tutorials directly from Microsoft, teaching data connection, modeling, visualization, and publishing dashboards.
The Carpentries - Data Carpentry
Community-driven lessons for researchers covering data organization, cleaning, visualization, and analysis in R, Python, and SQL.
Khan Academy - Intro to SQL
Beginner-friendly course teaching SQL fundamentals with practice problems and video explanations.
Kaggle Learn Python
Hands-on mini-courses for Python and data science, with notebooks you can run in the browser for immediate practice.
GeeksforGeeks Python Programming
Extensive collection of Python tutorials, code snippets, and explanations for basic to advanced topics, including algorithms.
Paul?s Online Math Notes
Comprehensive lecture notes, examples, and problem sets on calculus, differential equations, algebra, and more, written in an accessible format.
AI Engineering
Andrew Ng
A practical framework for building real-world AI applications from foundational principles