Most books are utter trash and blasphemy like 99.9%. I think one person mentioned Kyballion I think that’s utter trash too.
Only book I would recommend would be Franz Bardon’s Initiation into Hermetics. It’s really good however compared to the info on the JoS it’s on a primal level, JoS distills, rectifies and purifies all the info from these books and presents it to you. Some misinfo might exist in these books too. Actually a lot.
Another book would be Necronomicon however understand that it’s a book of allegories any of the myths, legends, and stories in that book are not literal. You have to have an open mind and soul to understand its mysteries.
Also Tarot Plain and Simple by Anthony Louis is pretty good too.
Something I would highly recommend however not directly spiritual would be Carl Jung’s Man and His Symbols really a masterpiece.