Dear Gloria,
1) In 2014, I learned to subtitle and produce videos. Here is the summary of self-empowerment process I used.
http://www.google.com.br/search?client=safari&rls=en&q=como+legendar+vid... ;
Most modern computers have installed an application that allows subtitling and produce video. This is the Windows Live Movie Maker. You can download the Movie Moker web,
2) I searched and found in the public domain music site. In my country I accessed the site http://www.dominiopublico.gov.br/pesquisa/PesquisaObraForm.jsp
3) I searched and found sites with photos and public domain images:
https://www.flickr.com/
http://pixabay.com/
4) I used reason and sensibility to choose photos, images, music, animation and visual effects. I learned to make and post videos on YouTube.
5) I was very happy to get caption, produce and put videos at this point of my life.
Nélia