Pick a good font that is easy to read and in a colour that can be seen against the background. It is a good idea to limit your font choices to one for the main body text, and possibly a second for headers and other decorative text. For body text that will be displayed on a screen, a sans-serif font (such as Arial, Verdana or Tahoma) is generally preferred over a serif font (such as Times New Roman) or funky font (like Comic Sans). Save those fonts for headers or other accent text.