On the outside it looks similar, but it's really very different under the hood. The main difference is that you own your own content and you decide what you do and what you want to see.
I am now at home and completely sober, so here are some articles that may help:
NOSTR basic concepts for new users
https://habla.news/u/mhardcastle@nostrplebs.com/1725913455892
NOSTR – A social media protocol for the next epoch
https://habla.news/u/mhardcastle@nostrplebs.com/1724842277970
Good luck