This tutorial walks you through every part of setting up a membership site, step-by-step. First things first: create a new post.
Add a new post
Log in to WordPress.com You can add a new post by either clicking the “Write” button in bar at the top of your screen, or by clicking the “Add New Post” button on wordpress.com/posts:

(If you’re in the WordPress app, head to My Site and tap the pink button.)
The block editor
Adding a new post opens the block editor, which will look something like this:

Give your post a title. Now, time to put in your exclusive content using the Premium Content block.