You can try finding people via hashtags...

The best way that I've seen to discover interesting Mastodon accounts is to join Mastodon instance(s) that are most appealing to you and scrolling through the local timeline. Additionally, searching for and following hashtags that appeal to you should make it easier to find Mastodon accounts that toot about topics that interest you.

If that's not what you want then this will likely depend on the client you are using, the type of Fediverse account you are using (eg - Mastodon, Lemmy, Pixelfed, etc.), and the instance/server you are using.

You could look through the public posts of the Mastodon instances (for instances that support publicly exploring the server without an account on that instance) that you are interested in. Once you discover the accounts you want to follow, you would need to manually search for those accounts using the full address of those accounts on the client of your choice (if you weren't already using it to begin with).

You could also look for lists of Mastodon accounts that people recommend on websites or throughout the Fediverse.

@datavoid @Makan check out @FediFollows and its https://fedi.directory/ :ablobcatrainbow:

I managed to do it. You just go to the hashtags and start looking for people and topics.

I use the Toot! app, which lets you add and interact with servers that aren’t your home server. I’ve found lots of people to follow that way!