@RobinApple@mastodon.social Hello and welcome to Fediverse.

Who should you follow? You don't have to do anything, you have to want it and trust in yourself.
Yes, it's difficult when you break out of years of caging, but you learn to appreciate the freedom of being responsible for your own follower list.

Look around the local or federated timeline and talk to people. Use hashtags and search for what is important to you and that way your timeline fills up bit by bit.

And one more tip, Mastodon is not the Fediverse but only one of over 100 possible access softwares.