Location best way to go

Hello Friends

I have reviewed the material relating to the location, only I need the latitude and longitude, I have seen that the GPS library is the best way to go, but I doubt about the battery life.
Other libraries seem confusing to me what I need, and there is a lot of material about the subject, but I have not found the way to go.

Can you help me what is the right way to get the location without much pain?

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