How to use cut

I’m sure this has been covered so I’m sorry for any duplication. I want to cut from the beginning of a recording approximately 15 second of silence before the voice starts. I can’t figure out how to do this. The manual hasn’t been helpful to me. Can someone please outline the steps to do this.

Thanks

  1. “Select” the first 15 seconds (see: Selecting Audio - Audacity Manual)
  2. Press the “Del” key.