Assuming you would like tips on reading a bezel:
A bezel is the border that surrounds the face of a watch. The most common type of bezel is the unidirectional or ratcheting bezel, which is used to measure elapsed time. To use a unidirectional bezel, align the zero on the bezel with the zero on the watch's dial; as time passes, you can see how much time has elapsed by looking at where the minute hand lies in relation to the markings on the bezel.
There are also many different types of dive watches, which have specialised bezels for measuring dive times. For example, some dive watches have a rotating inner bezel that can be turned so that its zero lines up with the minute hand; this allows divers to easily see how long they have been underwater without having to take their eyes off their oxygen supply gauge or depth gauge.
Some other types of watch may also have unique features on their bezels. For example, many GMT watches have a 24-hour scale on their outermost ring, which can come in handy when travelling between time zones.