指南 (zhǐ nán): to guide; guidebook

Before going to the museum, I bought a visitor's guide, which includes a map and opening hours.

This mobile app is a guide designed especially for foreign tourists; it can help you find nearby restaurants and subway stations.

The teacher handed out a thesis writing guide, telling us how to choose a topic and find materials.

When we got lost in the mountains, a local elderly man became our guide and led us out of the forest.