After you buy a new Casio watch, the first you want to do is know how to set a Casio watch. Most Casio watches follow a user-friendly setting method. When the second hand reaches the 12 o'clock position pull out the crown. (the small round knob on the side of the face) The second hand will stop and now you will have control of both hands. Turn the crown to set the clock hands to five minutes ahead of the current time and then back them up. At the time signal, push the crown in to finalize the setting of the time.
When you set your casio watch you first push the adjust button. You will want to hold it down till the numbers flash. The next step would be the mode button. This will flash the hours. Once you do this you need to press the start and stop. This will change the number. Pressing the mode button again will move you to the min.. You will then need to press the start and stop to set it. Then press mode to set seconds and adjust to set.