Pinter’s book is arguably the most recommended introductory text on Math Stack Exchange. If you are stuck on a specific problem that isn't in Campbell's list, you can almost certainly find it here.
The textbook is famous for its , where each chapter is a short discussion followed by an extensive set of thematically arranged exercises. a book of abstract algebra pinter solutions
Pinter's Abstract Algebra: Complete Solutions & Explanations a book of abstract algebra pinter solutions