A warm welcome to the community!
If you already have a login with QBOA and sign in through this SSO screen:
you can use that same login to sign into the QB Community!
Currently, since you are brand new to this particular community experience, you have a "visitor" rank. But that role will quickly change as you post and participate in the community. The community has lots of ProAdvisors like yourself who participate in discussions that rank up quickly to senior members :).
Feel free to add a link to your ProAdvisor page and use your profile page to share a little about yourself so folks know you're a QuickBooks expert ( here's are the steps for how to edit your profile).
Please reach out to us if you have any other specific questions!