How to draw a topographic map, given the points with x, y values and its height?

Just a general question. I have the data for a topographic map. I just have no clue how to use the points to make the actual map/drawing. For example here are a few points: Point X Y HEIGHT DESCRIPTION 1 255.03 900.11 500.45 Part of a road 2 248.99 ... show more Just a general question. I have the data for a topographic map. I just have no clue how to use the points to make the actual map/drawing.

For example here are a few points:

Point X Y HEIGHT DESCRIPTION
1 255.03 900.11 500.45 Part of a road
2 248.99 898.81 489.12 Part of a road
3 241.73 892.47 488.74 Part of a road
...

Could anyone give me a well explanation (or even a resource) to help me understand how to plot/draw the topographic map given the info?
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