Maps can be useful in Minecraft. To use a map, open a empty map. It will immediately turn into a saved map and will be placed in your inventory. If you do not have space it will fall to the ground. Select your saved map to view it.
Use maps to see current position
Coordinates are written: x , y, z
If you have a hard time just remember x y z is alphabetical order.
Saved maps can be placed in chests or even placed in frames. Place a frame, select saved map and click on frame.