Hello. I am just a beginner, but I'll chime in. Using "xxx said" or "said xxx" is obviously a style thing. I would keep in mind a few things. Do not use it too much. If you have many alternating lines of dialogue between two speakers, try to get someone to say a name for the reader's clarification. But maybe what's most important is whether or not you put the dialogue tag in front or after the quote. Obvious no no's would be:
Jack said, "If the tarp is too big I can find--"
Jennifer interrupted, "No, no. It's fine."
*maybe this is better*
Jack said, "If the tarp is too big I can find--"
"No, no. It's fine," Jennifer interrupted.
In dialogue with more than two speakers, you have to juggle clarity with flow. I've seen too many writers put tags at the end of the quote, and that's not always good, because only at the end do you understand who was speaking.
Anyway, I'm just a newb with a few ideas. I hope that was good advice.