How do I generate a NDVI map and a Profuctivity Map to analyze precision agriculture?

[Ronald_StevenReto_Campos]

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178/5000

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178/5000

Goodnight,
I want to generate such maps with images landsat 8 or sentinel 2, but I want to know the procedure and the parameters that I must follow for a good analysis.

[DanPatterson_Retired]

There are some tutorials on working with imagery 

http://desktop.arcgis.com/en/arcmap/latest/manage-data/raster-and-images/wkflw-implementing-an-algor...

other options can be found by searching the help using "ndvi" as the key search term