When putting text on your site, it's always best to stick to the simple ones that come with all computers, before their users pump them full of millions of downloaded type treats. Arial and Times New Roman are your best bets for universal compatibility, but the more adventurous and appealing Trebuchet and Verdana are fast become web standards too. Never underestimate the power of bold and italic text, they can sum up your argument and convey your feelings very quickly and effectively. Oh, and don't make your body text too big. It may look fine on your monster monitor with a resolution higher than Everest, but spare a thought for those poor saps who have to squint at their low-resolution postage stamp sized screens.
Text always looks much neater at smaller sizes.
All this is no good if no one can see the fonts on your page anyway. Make sure you background does not make the text too hard to read. Try to sick to simple backgrounds with similar colors. If you background is dark, make your text as light as possible to stand out. If your background is light, make your text dark.