If you install Linux for the first time and are greeted with an ugly set of fonts -

1. Make sure you install all the popular TrueType fonts (Microsoft’s common fonts are gener­ally avail­able via your distribution’s repositories).
2. Remember to enable anti-aliasing of fonts. Anti-aliasing can be turned on through the desktop-environment’s config­u­ra­tion, for example, KDE’s Control Center.
3. Set the hinting to ‘medium’ while enabling anti-aliasing of fonts.
4. Change the user-interface fonts to something that looks good, like Verdana, DejaVu or Calibri. Firefox also comes with an ugly set of default fonts, so you may also want to change those defaults too.