Vast Difference, the first book.
In some worlds the person is surrounded with danger. This is a sign of not having a good mate. Other texts or ‘clues’ will present themselves (suggesting the importance of the letter ‘C’). For example,
The Use of Deadly Force. The second book.
These (later) books or information should not be taken seriously, as they are really flirtations from higher powers. However, they can be used to ‘evolve’---the third book (back to the letter ‘E’).
Evolution may take place by reading the books one has been carrying all along, the magical / secret books about life in this magic world. It may involve a special ability or saving throw, such as imitating Love or Jesus.
The new power will be to gain significance for the gods---the fourth book. This may involve the elimination of the surrounding dangers.
That’s the basic tutorial on essential metaphysical survival.