The Praat program is a free tool intended for, e.g., speech and voice researchers. Praat is available at http://www.praat.org. The program has been developed by Paul Boersma and David Weenink. This video shows the basic steps of working with sound in Praat: how to open a sound file, how to use the object list and the dynamic menu, the basic features of the Sound editor window, playing and viewing the sound sample, editing sound by cutting and pasting, and saving the sound object into a file. NB: In case the English subtitles do not work, you can also watch the same content via YouTube - see the link under References.