Welcome to CoSo!
Check out this post for some pointers:
https://counter.social/@Knitpurrl/108192906629672680
The userguide should get you grounded: counter.social/userguide.pdf
But, generally, the process is similar to Twitter.
- The Reply arrow replies to the toot.
- The double arrow Boosts (ReToots) it to the community firehose and your followers. - The Star is a Favorite (Like) to edify the author.
Hope that helps!