I stumbled across Elmore Leonard's Ten Rules of Writing and thought I'd post it. This is good advice, but I think a couple of them go a little too far. I'm sure you could get away with as many as 3 or 4 exclamation points in a word story.
This infographic gives brief summaries of the 12 Jungian personality archetypes, for use when building charcaters. As with any writing tools, archetypes are really most useful if you think of them as a starying block - you cannot simply reduce people to 1