No affiliation (I shoot Canon) but thought this might be useful.
You do have to provide an email address but you can opt out of the marketing (it would appear)..
https://www.nikonevents.com/us/live/nikon-school-online/
You do have to provide an email address but you can opt out of the marketing (it would appear)..
https://www.nikonevents.com/us/live/nikon-school-online/