OpenStax

High-quality, peer-reviewed, openly licensed college textbooks that are free online including: Calculus, Statistics, Biology and Microbiology, Chemistry, Anatomy, Physics, Macro-Economics, Micro-Economics, Sociology, Psychology, Accounting, Business Management, etc. 

Typical e-textbooks from OpenStax:

  • Calculus 1
  • Calculus 2
  • Calculus 3
  • Introductory statistics
  • Principles of Macroeconomics
  • Introduction to Sociology
  • Psycology
  • Business Ethics
  • Organization Behavior

OpenStax

Free/Open Access