Minecraft wiki entry for Navigation, associated text: 1 Spawn Points
2 X, Y, and Z Coordinates
3 Above-Ground Navigation
3.1 Directional Guides
3.2 Trail Markers
3.2.1 Roads and Rails
3.3 Maps
4 Underground Navigation
4.1 Trail Markers
4.2 Other hints
5 Marine navigation
6 Block Orientation
7 Video