Principles of Data Science PDF Download – OpenStax (Ault et al., 2025) BS DS BSCS
Principles of Data Science (OpenStax, 2025) for BS Data Science and BSCS: chapter summaries, key points, practice questions and a free PDF download link.
Data Science
Introduction to Modern Statistics PDF Download – Çetinkaya-Rundel & Hardin (2nd Edition) BS Stats/DS
Free CC BY-SA licensed statistics textbook from OpenIntro for BS Statistics and BS Data Science – covers data, EDA, regression, and inference by simulation and mathematical models.
R for Data Science (2nd Edition) – Free Online Book (Wickham, Çetinkaya-Rundel, Grolemund)
Read R for Data Science, 2nd Edition, free online. The complete O’Reilly guide to importing, tidying, transforming, and visualizing data with the tidyverse.
Forecasting: Principles and Practice – Free Book (BS Stats/DS)
Read Forecasting: Principles and Practice (FPP3) by Rob J Hyndman & George Athanasopoulos free online — the standard R textbook for time series forecasting.
Python Data Science Handbook – Free Book (BSCS / BS Data Science)
Read Python Data Science Handbook (2nd Edition) by Jake VanderPlas free online — the standard hands-on reference for NumPy, Pandas, Matplotlib, and Scikit-Learn.