Newbie needing to add multiple pages

I’m a total newbie to wordpress and here’s what I’m trying to achieve with little success and with no assistance from godaddy and I can’t find the support button anywhere for wordpress. I have my wordpress website and I’m trying to add pages that my users (crafters) can log into to create their own content (upload their products & collect their own payments)-how can I add this to my webpage I have created? Thank you!

The page I need help with: [log in to see the link]