@LauraLuke then please share where you are having trouble.
- go to settings, then uploads, then you should see the prompt to visit wayfarer about the tutorial
- the prompt for the tutorial should display some information for you to review. This video shows what that part looks like: https://www.youtube.com/watch?v=EuzvqDwqMPE
- restart your game, then return to the uploads section, and you should see the “New Pokestop” button under “Pokestop Contribution”
If any of this is not what you are seeing, please post a screenshot of what you do see instead.