And for good writing in general, read Orwell's Politics and the English Language.

1. Never use a metaphor, simile, or other figure of speech which you are used to seeing in print.

2. Never us a long word where a short one will do.

3. If it is possible to cut a word out, always cut it out.

4. Never use the passive where you can use the active.

5. Never use a foreign phrase, a scientific word, or a jargon word if you can think of an everyday English equivalent.

6. Break any of these rules sooner than say anything outright barbarous.

Full essay: http://www.resort.com/~prime8/Orwell/patee.html