If you are interested in learning about some of the common edible flowers around; then you might want to read through this detailed article about flowers that are edible. Not all flowers or parts of the plant are palatable; this is why you want to take note of the flowers that are edible and the ones that are not.
Once harvested, wash the flowers and spread them out on a tray to dry. You can also coat the petals of the flowers with egg white and sprinkle sugar on them and leave to dry.
These flowers can be prepared by removing the stamen and pistil. They can then be added to your beverage or salad to improve the taste and appearance.