It only has an up and down motion. You will need to turn your body to find direction. Any flexible rod, branch or wire. Can be most any length from one foot to over three feet. They sometimes have a coiled wire and a weighted tip.
Most dowsers find it easy to use.
Won't usually fit in your pocket or purse. To start, choose a dowsing tool that seems most comfortable for you to use. The dowser is usually seeking flowing, underground, potable water suitable for drilling and pumping. To begin, assume the search position. Start walking across the area of interest.