I think that if a father is seeking a guide book on how to be the best father he can be, he should look for:

A book that teaches about unconditional love.

A book that teaches about forgiveness.

A book that teaches how to put other’s needs (not wants), especially their children’s, above their own.

A book that teaches about sacrificial love.

A book that teaches how to subdue their pride, especially when it comes to their children.

A book that teaches how a father should guide their children.

A book that teaches about tough love when faced with a rebellious child.

A book that teaches him how to expect the best from their children.

A book that teaches them how to teach their children to think for themselves; not spoon-feed knowledge/truths to them.

A book that teaches them how to lead their children by example.

A book that teaches them how to teach their children to respect authority.

A book that teaches their children how to stand up for those being wronged.

A book that teaches about the importance of honoring others.

A book that teaches them how to be an example of courage.

A book that teaches them to stand strong in their faith.

And finally, a book that would teach them how to be the kind of father that would reflect the Heavenly Father.

Because after all, a child first learns about God’s character by first witnessing it in their earthly fathers. That image will either prepare their hearts to love God or reject Him. Or create such a disinterest they will not pursue finding out who the Heavenly Father is.