You've just read about how Spotlight works fresh out of the box. But you can tailor its behavior, both for security reasons and to fit it to the kinds of work you do.
Here are three ways to open the Spotlight preferences center:
Choose Spotlight Preferences at the bottom of the Spotlight menu just after you've performed a search.
Use Spotlight itself.Hit ⌘-Space bar, type spotl, and press Enter.
Choose → System Preferences. Click Spotlight.
In any case, you wind up face-to-face with the dialog box shown in Figure 3-6.
Figure 3-6. Here's where you can specify what categories of icons you want Spotlight to search, which order you want them listed in the Spotlight menu, and what keystroke you want to use for highlighting the Spotlight bar.
You can tweak Spotlight in three ways here, all very useful:
Turn off categories. The list of checkboxes identifies all the kinds of things that Spotlight tracks. If you find that Spotlight uses up valuable menu space listing, say, Web bookmarks or fonts—stuff you don't need to find very often—turn off their checkboxes. Now the Spotlight menu's precious 20 slots are allotted to icon types you care more about.
Prioritize the categories. This dialog box also lets you change the order of the category results; just drag an individual list item ...