It seems as if everyone uses spreadsheets. Most people don't think about them too much, but there are ways to improve your spreadsheet use.
Joe and Jesse talk about spreadsheets on The Roundtable what you probably know (that's right), what you probably know (that's irrelevant), and what you probably know (that's wrong).
Download a comparison of several sets of standards here: Standards Comparison
It's probably more than you want to know so we'll boil it down to a few simple practices.