books.google.com - Algebra: Chapter 0 is a self-contained introduction to the main topics of algebra, suitable for a first sequence on the subject at the beginning graduate or upper undergraduate level. The primary distinguishing feature of the book, compared to standard textbooks in algebra, is the early introduction...https://books.google.com/books/about/Algebra.html?id=deWkZWYbyHQC&utm_source=gb-gplus-shareAlgebra