How to set up Wi-Fi for Nikon 6500s camera?

How to set up Wi-Fi for Nikon 6500s camera? - 1

Read the manual?

Your camera is actually a S6500 and not only has Wi-Fi, but GPS on board as well.

You can download the PDF file of the S6500 using the link below

Pages 1057, 108, 109 and 110 tells you what to do

Even professionals read manuals. Sometimes.
And yes, fotoace is right. Your camera has GPS.