OK then, we’ll start with the basics - a list is just a collection of various items. In the Fediverse you can follow people on the bulk of the services and communities on here. So they are basically the items you’ll be adding to your list.
Bear in mind that:
I’m still figuring this all out.
My examples are using Tusky, other Mastodon apps exist.
I have largely decamped to Calckey.
So the first thing you want to do is follow someone. I will follow you on here for this example.
I hit the search button and add your user ID into search:
Then hit “create a list”.and it tags it on the end of any other lists you have. Hitting the ellipsis … gets you the option to edit it, along with other other things you may need to manage the list:
Hit + and it turns to an X (so you can remove them from the list). They are now in your list and, when there are new posts, that list will start to fill up with content.