Yes, there are several online resources available for Abstract Algebra by Dummit and Foote. The authors have a website that includes additional exercises and solutions, as well as a list of errata for the textbook. There are also various study guides, lecture notes, and video lectures on abst...
Lectures in abstract algebra : v.1. : Basic concepts [For the entire collection see Zbl 0534.00019.] An Abstract Semantic Algebra (ASA) is given, from which it is possible to obtain functional, imperative and... Jacobson,Nathan - Lectures in abstract algebra : v.1. : Basic concepts 被引...