Spoons are the classic handheld glass pipes that you imagine when you hear "hand pipe", and they generally contain four main parts: a mouthpiece, a bowl, a neck, and a carb. The mouthpiece gives you a place to inhale from, and the bowl is where you pack dry herbs. The neck is the long tube that connects the mouthpiece to the bowl, and the carb is a hole on the side of the bowl that allows for the control of airflow. This control of air allows you to decide how strong your hits are while letting you moderate the speed at which you inhale smoke.
Don't forget to grab a pipe case, and some hempwick for the cleanest smoking experience.