said

Only speech-Attributions, he said.

The basics first: “He/she said” is the basic modifier. Dialogue tells us what is said, attribution tags tell us who said it and modifiers tell us how it was said. These are the aspects we deal with here, adverbs (he said happily) are a matter for concern in a different article.

show

Show, don’t tell & partial scenes, when to use which?

Show, don’t tell. Built-in past is called “exposition” and requires explanations so the reader can understand what is happening now. In its very nature, this is ‘telling’ rather than showing. Showing, on the other hand, makes use of evocative description.