Learners and educators in search of free textbooks may find a solution in LibreTexts, a nonprofit project that describes itself as "a multi-institutional collaborative venture to develop the next generation of open-access texts to improve postsecondary education at all levels of higher learning." Visitors to LibreTexts will find "twelve independently operating and interconnected libraries that...

Math students will find this online textbook to be a valuable study aid to complement their lecture notes and standard class text. It is intended to help students, especially those majoring in mathematics, make the transition from standard math classes to more rigorous, advanced topics and abstract theory. Spanning over 200 pages, the text covers "basic set theory, induction, quantifiers,...