The Book of Yona (The Prophet Jonah)
An excellent work that will make you delve into the book of Yona as you had never imagined.
It talks about important topics such as: Life after death, separation between soul and body, teshuva-repentance, and very important topics.
With translation, comments, questions and answers.
Once you read this book, you will become more afraid of Heaven and your way of thinking will no longer be the same.