Hotwire is pretty new but there are some guides out there. it's a progressive enhancement thing generally so you build it normally and then sprinkle in the extra stuff.

1000 foot overview: https://boringrails.com/articles/thinking-in-hotwire-progres...

a tutorial: https://www.hotrails.dev/turbo-rails

a video tutorial: https://www.driftingruby.com/episodes/hotwire-introduction

probably a good paid option: https://pragmaticstudio.com/hotwire-rails

and then there is the main site: https://turbo.hotwired.dev/

cheers!