For those seeking introductory books on groups in algebra, "A Book of Abstract Algebra" by Charles R. Pinter is highly recommended for its accessible, conversational style and self-contained content. It effectively introduces concepts leading up to Galois theory, and completing the exercises is crucial for grasping important results. Another suggestion is "Groups and Symmetry" by Armstrong, which offers a geometrical perspective and pairs well with Gilbert's "Elements of Modern Algebra" for a more traditional approach. "Visual Group Theory" by Carter is also noted for its unique presentation and is recommended as a supplementary resource. While "Fraleigh" is considered basic and user-friendly, it may not be suitable for math majors, especially older editions lacking proofs. Michael Artin's "Algebra" is suggested for those looking for expert-level material.