Here are some of the books you can prefer which is good to understand the basic concept & overall.

Elements of Strength of Materials 5 Edition by D. H. Young, S. P. Timoshenko

Advanced Mechanics of Solids 3 Edition by LS Srinath

A Textbook of Strength of Materials : Mechanics of Solids (S.I. Units) 5 Edition by R.K Bansal

Strength of Material by R.K Rajput

Good Luck!