I've put some web based training zone calculators together for you to calculate training zones based on heart rate or power; using either age, Andy Coggan or Joe Friel methodologies. The links below will take you to the calculators. Check the bottom of each calculator page for reference links to books or articles from the originator of the actual training zones such as Andy Coggan or Joe Friel.
Basic Heart Rate Training Zone Calculator
Andy Coggan Heart Rate Training Zone Calculator
Andy Coggan Power Training Zone Calculator