If you want to view and possibly adjust any of the settings for the Clock app then you can do so by tapping on the Menu icon (three dots) in the lower-right corner of the main clock screen and then choosing Settings from the pop-up menu. Here you are able to change the clock from a digital to an analogue display, trigger an automatic home clock (to let you know the time back home if you take your device away with you to another part of the world) and set the general time zone.
There are also options that apply to your alarms, such as when to turn off without assistance, the snooze length and volume. When setting an alarm, go here to ensure that the settings are right for your needs. If you need further assistance with any aspects of the app then you can tap on the Menu icon (three dots) in the top-right corner of the screen while at the Settings screen in order to find a handy Help option.