(education) A book or other resource intended to provide key notes and concepts for people studying a particular topic or course.

Identification handbook for natural objects.

Instructor for travel and destinations.

Instructions to help achieve something.

Manual providing directions, information, assistance.

Information and tips for travelers.

Instructions for using a product.

Rules for consistency in communication.

Structure directing flow of waves.

A spirit guide, in Spiritualism, is an entity that remains as a discarnate spirit to act as a guide or protector to a living incarnated individual.

Reference for current market values.

Synonym of tour guide

Trained dog assists visually impaired.