Drying is not the best solution for preserving all herbs.  It works best with herbs that have woody stems like thyme, oregano or savory. Done correctly, these dried herbs will hold their flavor well. The traditional way to dry herbs is to hang them in bunches, but they will also dry well in a microwave oven (future tip).

Hang-drying herbs - Herbs hanging in a well-ventilated place will dry within a few days to a week. Avoid putting them in direct sunlight or around too much heat because this will cause oils to evaporate. Drying is complete when the leaves feel brittle.  Large leaves can be rubbed between the palms of your hands to crumble them. Otherwise, strip the leaves from the stems. Store in airtight containers.