Video tutorials / Screencasting in English

Budget : $50

I need someone to create 3 video turorials in English about these tools :

Openshot
YouTube
Audacity

Important info:

-Each tutorial should be around 45 - 60 minutes, I will break down the videos into pieces (you can provide the whole video in one file or many files as you prefer) .

- I will provide the topics of the points to be covered in each of the videos.

- I will also provide the video tutorials about theses tools that I created in Spanish so you can follow my idea and the materials to be used in the examples for open shot and youtube will be also provided

- Please attach a short sample video of previous videos of this kind that you have done.