Audacity

Audacity Manual: http://manual.audacityteam.org/o/

Audacity Forum: http://forum.audacityteam.org/

Audacity Help: http://manual.audacityteam.org/o/quick_help.html

The video contains a quick step by step demo on how to edit an audio using Audacity software.

https://youtu.be/G7BZjjH4I9M

Making a Mashup in Audacity: Tutorial part 1/2

https://youtu.be/-Y6x5CzAmN8

Audacity: How To Make Mashups (Part 2) (Beginners)

https://youtu.be/i_rbfpBkdrQ

How To Sound Like Morgan Freeman (Audacity Tutorial)

https://youtu.be/Sfwwdqa1HRU