I have always enjoyed C.S. Lewis and The Screwtape Letters is a very fascinating read and a somewhat distinctive idea. The set up is: what would a series of letters look like if they were written by one of the superior servants of the devil to a freshman or new demon who needs advice on how to trip up his human assignment and cause that human to deal with the devil.
The result is humorously sardonic, thoughtful, and witty. I'm sure the expectation of the author is that once you've realize what the devil’s traps are you can elude them in the future.