I would suggest first; Read your Bible all the way from Genesis to Revelation before reading any Theology book.
When you have done that , you will probably NOT find the basis for the Calvinistic/Luthaeran/Augustinian way of thinking. You will ( hopefully ) see that the basis of the Reformed/Calvinist/ & Luther thought is straight from a guy in North Africa. His name: Aurelius Augustin (e) , and because of his bad misreading of Romans 5:12 ... The Western Church for many centuries has been teaching wrong stuff. (( he used the Latin Vulgate instead of the Greek N.T. written in the Greek language )).
We humans die physically. That comes from Adam. Total Depravity and the "Original Sin" Doctrine of the "Western Church"... which comes from Augustin(e) and NOT from scripture... That doctrine is a monstrous lie. The R.C.'s , The Lutherans , Anglicans, Calvinists/Reformed teach "Total Depravity" because of Augustin's zero knowledge of Greek , and because he was strongly influenced by the Manicheans. (( They have/had gnostic tendencies . )) Sin means = 'Missing the mark'. Sin is NOT an inherited thing like a cleft chin or red hair.
Stick with Holy Writ , and avoid wolves in sheeps clothing !