Finger sex involves a woman's partner using their fingers to arouse her clitoris. A man's sex partner can also use their hands to arouse him by stroking his penis (sometimes called a 'hand job'). Some people like to have their anus stimulated using fingers. Over time you will learn how to please your partner. Although finger sex is much safer than vaginal or anal sex, it is not risk free.
Attribution: Straight Talk Foundation & Marie Stopes