The first video shows you how to find the download page from a great free sound editing software called Audacity.
The next video shows you how to produce a beat with the free online software Soundation. When have created the beat it is opened in Audacity where a voice track is recorded. (You could record in Soundation, but not in the free version.)
The third video is about sharing a Soudcloud track on a Tumblr blog.