If you participated in the seminar Telling Your Data Story Using Tableau, then you will find this is also in the “Tell Me More!” module.
Early in 2022 Tableau started a user group for Tableau newbies and you can sign up here: https://usergroups.tableau.com/tableaunewbiesusergroup
Their next meeting is on May 26th. The group is led by a couple experienced Tableau users.
Also, you may want to check out the The Tableau Student Guide. This is a blog that Tableau started early in 2022 and it posts a new dataset and challenge each week. You can then submit your visualization and get feedback from the group. If you are trying to build a portfolio of work, this is a way to get started since they provide a dataset and a goal (early on it’s often hard for new users to decide what to analyze, so this gives you a starting point, a goal, and feedback).