While working, use the menu at the top of the screen to select exactly what section of the track to edit. As well as editing existing audio files, GoldWave can also create an audio file, a great feature that means you can create original tracks.
To get started, just open an audio file to work on. On top of that, it has a simple and intuitive interface that makes editing audio files quick and easy.
It's a great option with endless features that will help you do almost anything with your sound files. If you're looking for a great, near-professional level audio editor, check out GoldWave.