It's common to bring zucchini blossoms home and find that they have bugs in them. So, you will need to gently shake them upside down to remove any little stow-aways that took shelter in the blossom.  After you have removed any bees or bugs, go ahead a take off the pistil or male stamen that you see. Simply use your fingers to break them off.  Then gently wash and dry the flowers. You can make this recipe for stuffed zucchini flowers, add them to green salads, or sauté them. They are delicious!