Mostly chronological posts, primal has this by default too but you can also choose 'tribe' or something other such thing to get follows of follows and what not.

Amethyst has an option to pick some feeds, called DVMs, eg posts about cats. But the default fees will be chronological.

You can follow hashtags on most clients. Which I would recommend. There's often nostr suffic hashtags too, like #bookstr

Hmm some more tips..

Don't follow too many people, but also don't follow too few lol

Um..

Bear in mind it's all WIP lol

¯⁠\⁠_⁠(⁠ツ⁠)⁠_⁠/⁠¯