Make sure your volume is max and you picked out a Song or Noise. Play around with it and check and make sure your sound is working. For example, if it's 5pm now, set it to 5:02pm so you can see if the alarm goes off. It's really easy to get the hang of it.

I set an alarm everyday because it's very important I get up at 6am! But everytime I set it it doesn't go off in the morning. There's no reason for this? Luckily this morning I woke up and it was 6am but my 6:15 alarm clock never went off and neither did 6:30. I need to know how to work this clock. It's seriously annoying.